Interest and Other Income - Schedule of Interest and Other Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Schedule Of Investment Income Reported Amounts By Category [Line Items]
Mark-to-market of investments in our deferred compensation plans	$ 362		$ 1,095
Interest and other income	150		271
Total interest and other income	$ 512		$ 1,366
Predecessor [Member]
Schedule Of Investment Income Reported Amounts By Category [Line Items]
Mark-to-market of investments in our deferred compensation plans		$ 644		$ 1,228
Interest and other income		353		478
Total interest and other income		$ 997		$ 1,706