Discontinued Operations- Income Statement and Balance Sheet (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Major classes of items in net income (loss):
Discontinued operation, revenues	$ 227,989	$ 352,077	$ 477,001
Discontinued operation, operating expenses	(211,395)	(391,702)	(490,006)
Discontinued operation, other loss, net	(719)	(2,673)	(1,316)
Income (loss) from discontinued operations before income taxes	15,875	(42,298)	(14,321)
Loss on sale of discontinued operations before income taxes	(73,800)	0	0
Discontinued operation, income (loss) from discontinued operation, before income taxes	(57,925)	(42,298)	(14,321)
Discontinued operation, income tax benefit (expense)	(5,196)	14,950	(15,682)
Discontinued operations, net of income taxes	(63,121)	(27,348)	$ (30,003)
Major classes of assets and liabilities:
Cash	0	2,158
Accounts receivable, net of allowance	0	26,352
Inventories	0	43,480
Other current assets	0	3,182
Property and equipment, net	0	9,824
Goodwill, net	0	67,201
Other intangible assets, net	0	59,006
Other long-term assets	0	460
Total assets of discontinued operations	0	211,663
Accounts payable	0	33,295
Other current liabilities	0	15,622
Debt (net of discount and including short-term and long-term portions)	0	25,000
Deferred tax liability, net	0	13,816
Other long-term liabilities	0	542
Total liabilities of discontinued operations	$ 0	$ 88,275