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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2016
Cash flows from operating activities. |  |  |
Net income (loss) | $ 27,420 | $ (459) | $ 8,551
Adjustments to reconcile net income (loss) to net cash provided by operating activities: |  |  |
Depreciation and amortization expense | 75,260 | 74,280 | 68,225
Stock-based compensation expense | 20,817 | 22,598 | 18,616
Deferred income taxes | (4,015) | (7,065) | (3,818)
Provision for doubtful accounts | 4,089 | 4,512 | 4,610
Impairment of investment in Web International Education Group, Ltd |  | 10,000 |
Other | 4,822 | 4,286 | 3,051
Changes in assets and liabilities: |  |  |
Accounts receivable | 11,987 | (27,745) | 14,463
Inventories, prepaid expenses and other current assets | (3,801) | 1,323 | 2,939
Deposits and other assets | (24,690) | 10,020 | (8,910)
Accounts payable | (2,336) | 5,317 | (3,900)
Accrued liabilities | (8,092) | (4,963) | 15,497
Accrued compensation and benefits | 6,672 | (1,674) | 4,255
Deferred revenue | (2,077) | (1,135) | 636
Deferred rent and other liabilities | (2,429) | (567) | (2,437)
Net cash provided by operating activities | 103,627 | 88,728 | 121,778
Cash flows from investing activities |  |  |
Purchase of property and equipment | (8,743) | (2,174) | (5,008)
Capitalized software development costs | (24,533) | (26,918) | (36,265)
Capitalized curriculum development costs | (9,927) | (19,132) | (21,627)
Acquisitions and investments | (7,274) | (9,063) | (19,953)
Sale of trade name |  | 89 |
Net cash used in investing activities | (50,477) | (57,198) | (82,853)
Cash flows from financing activities |  |  |
Repayments on capital lease obligations | (13,301) | (15,697) | (17,402)
Purchase of treasury stock | (27,482) |  |
Proceeds from exercise of stock options | 196 | 6,953 | 14
Excess tax benefit from stock-based compensation |  | 291 | 6
Repurchase of restricted stock for income tax withholding | (10,314) | (6,191) | (3,394)
Net cash used in financing activities | (50,901) | (14,644) | (20,776)
Effect of foreign exchange rate changes on cash, cash equivalents and restricted cash |  | (11) | (12)
Net change in cash, cash equivalents and restricted cash | 2,249 | 16,875 | 18,137
Cash, cash equivalents and restricted cash, beginning of period | 230,864 | 213,989 | 195,852
Cash, cash equivalents and restricted cash, end of period | $ 233,113 | $ 230,864 | $ 213,989

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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
Name: | us-gaap_ShareBasedCompensation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration