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Acquisition of Business - Schedule of Assets Acquired and Liabilities Assumed - Blitz (Details) In Thousands, unless otherwise specified	9 Months Ended			0 Months Ended
	Sep. 30, 2014 USD ($)	Sep. 30, 2013 USD ($)	Dec. 31, 2013 USD ($)	Sep. 16, 2014 Blitz Communication Group Limited USD ($)	Sep. 16, 2014 Blitz Communication Group Limited GBP (£)
Business Acquisition [Line Items]
Purchase price				$ 24,415	£ 15,000
Cash acquired				(190)
Purchase price, net of cash acquired	40,775	647		24,225
Accounts receivable, net				264
Inventory				433
Prepaid expenses				410
Property and equipment, net				5,892
Intangible assets				9,636
Total assets acquired				16,635
Accounts payable				1,232
Accrued liabilities				2,246
Customer deposits				199
Deferred tax liability				767
Revolving credit facility				488
Accrued dilapidations				589
Total liabilities acquired				5,521
Total fair value of net assets acquired				11,114
Excess purchase price over fair value of net assets acquired (“goodwill”)	$ 140,661		$ 129,543	$ 13,111