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Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified | 6 Months Ended
--- | ---
Jun. 30, 2013 | Jun. 30, 2012
Cash flows provided by operating activities: |  |
Net income | $ 40,009 | $ 30,067
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Share-based compensation | 4,905 | 3,716
Excess tax benefits from share-based compensation | (3,465) | (121)
Amortization of debt issuance costs |  | 32
Provision for bad debts | 9,485 | 7,871
Depreciation and amortization | 12,141 | 10,164
Loss on asset disposal |  | 182
Gain on proceeds received from note receivable | (2,187) |
Deferred income taxes | 1,050 | (2,187)
Changes in assets and liabilities: |  |
Restricted cash and cash equivalents | 4,508 | 1,633
Accounts receivable | (10,179) | (4,419)
Prepaid expenses and other | (4,123) | (1,846)
Due to/from related parties | (66) | 92
Accounts payable | 119 | (1,627)
Accrued liabilities and employee related liabilities | 2,180 | 9,286
Income taxes receivable/payable | (7,842) | 19,021
Deferred rent | (446) | 682
Deferred revenue | 2,971 | 9,383
Student deposits | (5,024) | (2,354)
Net cash provided by operating activities | 44,036 | 79,575
Cash flows used in investing activities: |  |
Capital expenditures | (38,008) | (50,454)
Purchase of land and building related to future development | (6,936) |
Purchases of investments | (55,219) |
Proceeds from sale or maturity of investments | 6,780 |
Restricted funds held for derivative collateral | 140 | 180
Proceeds received from note receivable | 29,187 |
Net cash used in investing activities | (64,056) | (50,274)
Cash flows provided by financing activities: |  |
Principal payments on notes payable and capital lease obligations | (3,336) | (1,299)
Repurchase of common shares including shares withheld in lieu of income taxes | (8,491) | (1,978)
Excess tax benefits from share-based compensation | 3,465 | 121
Net proceeds from exercise of stock options | 14,072 | 3,426
Net cash provided by financing activities | 5,710 | 270
Net (decrease) increase in cash and cash equivalents | (14,310) | 29,571
Cash and cash equivalents, beginning of period | 105,111 | 21,189
Cash and cash equivalents, end of period | 90,801 | 50,760
Supplemental disclosure of cash flow information |  |
Cash paid for interest | 1,059 | 286
Cash paid for income taxes | 33,096 | 10,385
Cash received for income tax refunds | 4 | 7,625
Supplemental disclosure of non-cash investing and financing activities |  |
Purchases of property and equipment included in accounts payable | 2,033 | 2,888
Tax benefit of Spirit warrant intangible | 134 | 134
Shortfall tax expense from share-based compensation | $ 205 | $ 125

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- Definition Amount of cash inflow (outflow) from operating activities, excluding discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3521-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585 + Details
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- Definition The cash outflow associated with the purchase of all investments (debt, security, other) during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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- Definition The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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