Stockholders’ Equity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018	Jan. 01, 2018
Increase (Decrease) in Stockholders' Equity
Balances, beginning of period	$ 101,842	$ 35,166
Cumulative effect of accounting change			$ (12,207)
Net loss	(2,659)	59,970
Other comprehensive income (loss)	30,889	19,877
Dividends paid ($0.05 per common share)	(9,408)	(35,016)
Issuance of common stock	(1,950)	(3,409)
Conversion to common stock	0	0
Stock-based compensation expense	6,784	3,273
Repurchase of common stock	(39,142)
Balances, end of period	$ 86,356	$ 67,654
Dividends paid (USD per share)	$ 0.05	$ 0.1875
Preferred stock
Increase (Decrease) in Stockholders' Equity
Balances, beginning of period	$ 1	$ 1
Balances, end of period	1	1
Preference stock
Increase (Decrease) in Stockholders' Equity
Balances, beginning of period	396	441
Conversion to common stock	(8)	(19)
Balances, end of period	388	422
Common stock
Increase (Decrease) in Stockholders' Equity
Balances, beginning of period	323,338	323,338
Balances, end of period	323,338	323,338
Additional paid-in capital
Increase (Decrease) in Stockholders' Equity
Balances, beginning of period	121,475	138,367
Issuance of common stock	(18,925)	(21,607)
Conversion to common stock	(168)	(386)
Stock-based compensation expense	6,784	3,273
Balances, end of period	109,166	119,647
Retained earnings
Increase (Decrease) in Stockholders' Equity
Balances, beginning of period	5,279,682	5,078,494
Cumulative effect of accounting change			$ (12,207)
Net loss	(2,659)	59,970
Dividends paid ($0.05 per common share)	(9,408)	(35,016)
Balances, end of period	5,267,615	5,091,241
Accumulated other comprehensive loss
Increase (Decrease) in Stockholders' Equity
Balances, beginning of period	(948,961)	(794,478)
Other comprehensive income (loss)	30,889	19,877
Balances, end of period	(918,072)	(774,601)
Treasury stock
Increase (Decrease) in Stockholders' Equity
Balances, beginning of period	(4,674,089)	(4,710,997)
Issuance of common stock	16,975	18,198
Conversion to common stock	176	405
Repurchase of common stock	(39,142)
Balances, end of period	$ (4,696,080)	$ (4,692,394)

Amount of increase to additional paid-in capital (APIC) from recognition of equity-based compensation.

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