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Consolidated Statements of Cash Flows $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Statement of Cash Flows [Abstract] |  |  |
Consolidated net income (loss) | $ 389,037 | $ 46,171 | $ (134,720)
(Income) loss from discontinued operations, net of income taxes | (217,246) | 48,956 | 71,812
Adjustments to reconcile consolidated net income (loss) to net cash provided by (used in) operating activities: |  |  |
Depreciation and amortization | 18,564 | 21,776 | 25,515
Non-cash operating lease cost | 5,021 | 4,971 | 5,085
Stock-based compensation to employees and directors | 11,133 | 7,841 | 16,160
(Increase)/decrease in deferred income taxes, net | (53,829) | 35 | 972
Income from equity method securities | (12,585) | 0 | 0
Other non-cash adjustments | 1,537 | (542) | 78
Changes in operating assets and liabilities: |  |  |
Accounts receivable, net | 1,677 | (6,715) | 16,786
Inventories | 1,106 | (403) | 8,268
Prepaids and other current assets | 2,958 | (5,358) | 5,601
Other long-term assets, net | (1,755) | (264) | (664)
Accounts payable | (7,787) | 34,428 | (26,752)
Accrued liabilities | (21,595) | 48,907 | (7,055)
Unearned revenue | (12,778) | 31,049 | (9,337)
Operating lease liabilities | (5,261) | (5,995) | (7,008)
Other long-term liabilities | (150) | 1,769 | 416
Net cash provided by (used in) continuing operating activities | 98,047 | 226,626 | (34,843)
Net cash used in discontinued operating activities | (17,128) | (30,152) | (46,769)
Net cash provided by (used in) operating activities | 80,919 | 196,474 | (81,612)
Cash flows from investing activities: |  |  |
Contributions for capital calls | (41,122) | 0 | 0
Expenditures for property and equipment | (13,617) | (14,874) | (12,835)
Other investing activities, net | (1,694) | (397) | 34
Net cash used in continuing investing activities | (56,433) | (15,271) | (12,801)
Net cash used in discontinued investing activities | (29,703) | (8,284) | (14,051)
Net cash used in investing activities | (86,136) | (23,555) | (26,852)
Cash flows from financing activities: |  |  |
Payments on long-term debt | (3,030) | (2,635) | (3,141)
Proceeds from long-term debt | 0 | 47,500 | 0
Proceeds from sale of common stock, net of offering costs | 0 | 195,540 | 82,954
Payments of taxes withheld upon vesting of restricted stock | (8,279) | (2,592) | (1,407)
Other financing activities, net | (1,374) | (6,449) | 2,927
Net cash provided by (used in) continuing financing activities | (12,683) | 231,364 | 81,333
Net cash provided by (used in) discontinued financing activities | 2,085 | 0 | (785)
Net cash provided by (used in) financing activities | (10,598) | 231,364 | 80,548
Net increase (decrease) in cash, cash equivalents, and restricted cash | (15,815) | 404,283 | (27,916)
Cash, cash equivalents, and restricted cash, beginning of year, inclusive of cash balances of discontinued operations | 519,181 | 114,898 | 142,814
Cash, cash equivalents, and restricted cash, end of year, inclusive of cash balances of discontinued operations | 503,366 | 519,181 | 114,898
Less: Cash, cash equivalents, and restricted cash of discontinued operations | 0 | 22,559 | 16,948
Cash, cash equivalents, and restricted cash, end of year | $ 503,366 | $ 496,622 | $ 97,950

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- Definition Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3536-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3521-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 + Details
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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3521-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3536-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 + Details
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- Definition The cash outflow for securities or other assets acquired, which qualify for treatment as an investing activity and are to be liquidated, if necessary, beyond the current operating cycle. Includes cash flows from securities classified as trading securities that were acquired for reasons other than sale in the long-term. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585 + Details
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