Quarterly report pursuant to Section 13 or 15(d)

Supplemental Disclosures

Supplemental Disclosures
9 Months Ended
Jun. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Supplemental Disclosures Supplemental DisclosuresUnder a resolution adopted in March 2020, the Board of Directors authorized the purchase, at management's discretion, of up to $200 million of our common stock. This supplemented a similar resolution adopted in June 2018. The share repurchase program was concluded on March 25, 2020 and will be re-evaluated once there is clarity around the impact of COVID-19. During the nine months ended June 30, 2020, we purchased approximately 2,767,000 of our common shares at a cost of $167.0 million. During the nine months ended June 30, 2019, we
acquired approximately 716,000 common shares at a cost of $45.4 million. At June 30, 2020, $150.0 million remained available for future stock repurchases when the Board of Directors resumes the share repurchase program.
During the nine months ended June 30, 2020, we granted 0.3 million restricted stock units to our board of directors and employees. These awards will vest ratably over one and five years, respectively.
Our deferred compensation plan uses both mutual fund and life insurance investments to fund its obligations. The mutual funds are recorded at fair value, based upon quoted prices in active markets (Level 1), and the life insurance investments at cash surrender value; changes in value are reported in our consolidated statements of operations. At June 30, 2020, the deferred compensation plan held $21.7 million of the mutual fund investments.
The carrying amounts of cash and cash equivalents, accounts receivable, accounts payable and other amounts included within current assets and liabilities that meet the definition of a financial instrument are shown at values equivalent to fair value due to the short-term nature of these items. Our debt balances are principally from credit facilities which can be utilized and repaid as required and whose rates are based upon prevailing market conditions; accordingly, we believe the balance disclosed approximates the fair value. Our accounts receivable billed and billable balance includes both amounts invoiced and amounts that are ready to be invoiced where the funds are collectible within standard invoice terms. Our accounts receivable unbilled balance includes balances where revenue has been earned but no invoice was issued on or before June 30, 2020. Restricted cash represents funds which are held in our bank accounts but which we are precluded from using for general business needs through contractual requirements; these requirements include serving as collateral for lease, credit card or letter of credit arrangements or where we hold funds on behalf of clients. Restricted cash is included within "prepaid expenses and other assets" on our balance sheet and is included within "cash, cash equivalents and restricted cash" in our consolidated statements of cash flows. A reconciliation of these balances is shown below.
  Balance as of
(dollars in thousands) June 30,
September 30, 2019 June 30,
September 30, 2018
Cash and cash equivalents $ 81,548    $ 105,565    $ 71,084    $ 349,245   
Restricted cash (recorded within "other current assets") 14,440    10,927    7,885    7,314   
Cash, cash equivalents and restricted cash $ 95,988    $ 116,492    $ 78,969    $ 356,559   

During the nine months ended June 30, 2020 and 2019, we made interest payments of $1.2 million and $2.3 million, respectively.
During the nine months ended June 30, 2020 and 2019, we made income tax payments of $55.6 million and $45.9 million, respectively.