Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current taxes [Abstract]
Federal	$ (426)	$ 457	$ 483
State	311	670	263
Deferred taxes [Abstract]
Federal	18,910	23,342	22,936
State	3,178	4,816	3,876
Income tax expense	21,973	29,285	27,558
Deferred tax asset [Abstract]
Accruals and reserves	4,085	9,809
Deferred compensation	4,344	6,010
Share-based payments	5,818	8,344
Net operating loss carryforwards	68,271	30,545
Capital loss carryforwards	11,861	0
Cash conversion derivative and cash convertible notes hedge, respectively	4,592	9,539
Basis difference on joint ventures	1,621	6,466
Other assets	4,297	3,933
Deferred tax assets, gross	104,889	74,646
Valuation allowance	(15,176)	(13,594)
Total	89,713	61,052
Deferred tax liability [Abstract]
Property and equipment	(2,386)	(49,645)
Intangible assets	(21,520)	(17,666)
Cash convertible notes hedge and cash conversion derivative, respectively	(4,592)	(9,539)
Other liabilities	(1,653)	(102)
Total	(30,151)	(76,952)
Net deferred tax asset	59,562
Net deferred tax (liability)		(15,900)
Net current deferred tax asset	0	7,717
Net long-term deferred tax asset	59,562	0
Net long-term deferred tax liability	0	(23,617)
Increase (decrease) in valuation allowance	1,600
Increase (decrease) in valuation allowance allocated to continuing operations	(9,600)
Increase (decrease) in valuation allowance allocated to discontinued operations	11,200
Operating Loss Carryforwards [Line Items]
Amount of operating loss carryforwards subject to an annual limitation	6,900
Cumulative net operating losses attributable to excess tax deductions from share-based payment awards	16,500
Tax effect on interest rate swap agreements	157	1	44
Undistributed earnings of foreign subsidiaries	13,900
Difference Between Income Tax Expense Computed Using Statutory Federal Income Tax Rate And Effective Rate [Abstract]
Statutory federal income tax	27,321	25,522	24,638
State income taxes, less federal income tax benefit	3,801	3,488	3,334
Permanent items	954	167	230
Change in valuation allowance	(9,615)	0	0
Prior year tax adjustments	(444)	108	6
State income tax credits	(44)	0	(650)
Income tax expense	21,973	29,285	27,558
Income Tax Contingency [Line Items]
Unrecognized tax benefits that affect our effective tax rate	0
Interest and penalties related to unrecognized tax benefits	0		0
Changes in Unrecognized Tax Benefits [Roll Forward]
Balance, beginning of period	0	253
Decreases based upon settlements with taxing authorities		(253)
Increases (decreases) in 2016	0
Balance, end of period	$ 0	$ 0	$ 253
Open tax year	2013
Capital Loss Carryforward [Member]
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards	$ 30,000
Tax credit carryforwards, expiration dates	Dec. 31, 2021
International [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carry forwards valuation allowance	$ 3,300
Operating loss carryforwards	12,800
Federal [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 177,600
Federal [Member] | Minimum [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration dates	Dec. 31, 2035
Federal [Member] | Maximum [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration dates	Dec. 31, 2036
State [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 207,200
State [Member] | Minimum [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration dates	Dec. 31, 2017
State [Member] | Maximum [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration dates	Dec. 31, 2036