Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities:
Consolidated net income	$ 17,270	$ 325,669
Income from discontinued operations, net of income taxes	0	217,246
Adjustments to reconcile consolidated net income to net cash provided by operating activities:
Depreciation and amortization	8,350	9,949
Non-cash operating lease cost	2,736	2,528
Stock-based compensation to employees and directors	9,334	5,107
Decrease (increase) in deferred income taxes, net	2,622	(47,046)
Loss from equity method securities	2,583	0
Other non-cash adjustments	(114)	721
Changes in operating assets and liabilities:
Accounts receivable, net	(1,504)	(10,141)
Inventories	(529)	(766)
Prepaids and other current assets	2,318	(3,452)
Other long-term assets, net	(943)	(368)
Accounts payable	(6,104)	56,543
Accrued liabilities	(8,339)	(10,651)
Unearned revenue	(2,833)	12,282
Operating lease liabilities	(2,850)	(2,812)
Other long-term liabilities	(175)	(270)
Net cash provided by continuing operating activities	21,822	120,047
Net cash used in discontinued operating activities	0	(17,128)
Net cash provided by operating activities	21,822	102,919
Cash flows from investing activities:
Purchase of equity securities	(11,420)	0
Payments to Acquire Long-term Investments	0	41,122
Capital distribution from investment	1,162	0
Expenditures for property and equipment	(6,406)	(5,620)
Other investing activities, net	(505)	(908)
Net cash used in continuing investing activities	(17,169)	(47,650)
Net cash used in discontinued investing activities	0	(29,703)
Net cash used in investing activities	(17,169)	(77,353)
Cash flows from financing activities:
Repurchase of shares	(60,077)	0
Payments on long-term debt	(1,707)	(1,366)
Payments of taxes withheld upon vesting of employee stock awards	(3,482)	(7,812)
Other financing activities, net	34	(1)
Net cash used in continuing financing activities	(65,232)	(9,179)
Net cash provided by discontinued financing activities	0	2,085
Net cash used in financing activities	(65,232)	(7,094)
Net increase (decrease) in cash, cash equivalents, and restricted cash	(60,579)	18,472
Cash, cash equivalents, and restricted cash, beginning of period, inclusive of cash balances of discontinued operations	503,366	519,181
Cash, cash equivalents, and restricted cash, end of period, inclusive of cash balances of discontinued operations	442,787	537,653
Less: Cash, cash equivalents, and restricted cash of discontinued operations	0	0
Cash, cash equivalents, and restricted cash, end of period	$ 442,787	$ 537,653