Summary of Significant Accounting Policies (Summary of Temporary Differences and Carry Forwards Which Give Rise to Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Deferred tax liabilities
Property and equipment	$ (15,031)	$ (16,032)	$ (5,784)
Goodwill	(1,290)	(407)
Intangibles	(24,244)	(23,896)
Other	(1,927)	(2,350)	(1,427)
Gross deferred tax liabilities	(42,492)	(42,685)	(7,211)
Deferred tax assets
Net operating loss carryforwards	17,642	14,107	9,137
Deferred revenue and setup charges	4,323	3,747	868
Leases	2,154	3,097
Other credits	492	630
Other	2,696	2,291	601
Gross deferred tax assets	27,307	23,872	10,606
Net deferred tax assets	(15,185)	(18,813)	3,395
Deferred income taxes	42,492	42,685	7,211
Valuation allowance			$ (3,395)
Net deferred	$ 15,185	$ 18,813