Discontinued Operations (Details) - USD ($) $ in Thousands		12 Months Ended
	Sep. 27, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Discontinued operations
Loss on sale of discontinued operations		$ 0	$ 0	$ 12,355
Summarized operating results for the Shoppers discontinued operations
Loss on sale before income taxes		0	0	(12,355)
Loss from discontinued operations		0	0	(11,071)
California Shoppers Operations
Discontinued operations
Gross proceeds from sale of assets in form of cash	$ 22,500
Loss on sale of discontinued operations	12,400
Income tax benefit from sale of assets	9,000
Transaction costs	$ 2,600
Shoppers
Discontinued operations
Loss on sale of discontinued operations		0	0	12,355
Summarized operating results for the Shoppers discontinued operations
Revenues		0	0	140,834
Income (loss) from discontinued operations before impairment charges and income taxes		0	0	2,509
Loss on sale before income taxes		0	0	(21,402)
Income tax benefit		0	0	7,822
Loss from discontinued operations		$ 0	$ 0	$ (11,071)