Consolidated Statements Of Cash Flows - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net income		$ 119,497	$ 50,437	$ 10,238
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		24,213	29,250	33,130
Unrealized foreign currency loss (gain), net		(1,140)	(1,455)	1,025
Loss (gain) on disposals of assets		(213)	5,019	(842)
Share-based compensation		14,412	13,105	9,773
Asset impairments		0	2,182	5,284
Operating lease cost		60,142
Provision (recovery) for doubtful accounts, net		1,566	711	(589)
Deferred taxes		(16,259)	959	(3,093)
Other non-cash items		(963)	1,994	(1,564)
Changes in operating assets and liabilities:
Accounts receivable, net of allowances		(15,015)	(24,623)	620
Inventories		(48,156)	(1,987)	23,319
Prepaid expenses and other assets		(4,012)	9,703	18,907
Accounts payable		6,032	12,953	(2,714)
Accrued expenses and other liabilities		13,265	18,065	5,489
Operating lease liabilities		(64,313)
Income taxes		902	(2,151)	(719)
Cash provided by operating activities		89,958	114,162	98,264
Cash flows from investing activities:
Purchases of property, equipment, and software		(36,576)	(11,979)	(13,117)
Proceeds from disposal of property and equipment		616	1,856	1,579
Other		(276)	13	0
Cash used in investing activities		(36,236)	(10,110)	(11,538)
Cash flows from financing activities:
Proceeds from borrowings		315,000	120,000	5,500
Repayments of borrowings		(230,000)	(662)	(8,611)
Series A preferred stock repurchase		0	(183,724)	0
Dividends — Series A convertible preferred stock	[1]	(2,985)	(21,015)	(12,000)
Repurchases of common stock		(147,190)	(63,131)	(50,000)
Other		(3,463)	(270)	(259)
Cash used in financing activities		(68,638)	(148,802)	(65,370)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash		(569)	(4,775)	3,053
Net change in cash, cash equivalents, and restricted cash		(15,485)	(49,525)	24,409
Cash, cash equivalents, and restricted cash — beginning of year		127,530	177,055	152,646
Cash, cash equivalents, and restricted cash — end of year		112,045	127,530	177,055
Supplemental Schedule of Non-Cash Investing and Financing Activities
Cash paid for interest		7,519	462	434
Cash paid for income taxes		$ 16,050	$ 18,633	$ 13,208

[1] Represents $3.0 million paid to induce conversion of Series A Convertible Preferred Stock to common stock during the year ended December 31, 2019 and Series A Convertible Preferred Stock cash dividends declared and paid of $9.0 million and $12.0 million paid to induce conversion during the year ended December 31, 2018.