Overview and Basis of Presentation - Summary of the Estimated Fair Value of the Tangible and Intangible Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Jun. 11, 2015	Sep. 22, 2014	Sep. 03, 2014	Jun. 30, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Goodwill				$ 10,322	$ 8,366
REV
Business Acquisition [Line Items]
Cash and cash equivalents			$ 765
Accounts receivable			1,753
Property and equipment			289
Identifiable intangibles			1,019
Other assets			16
Total assets acquired			3,842
Total liabilities assumed			655
Net assets acquired and net liabilities assumed			3,187
Goodwill			2,756
Total purchase price			$ 5,943
LAL
Business Acquisition [Line Items]
Cash and cash equivalents		$ 30
Accounts receivable		1,299
Property and equipment		253
Identifiable intangibles		1,290
Other assets		28
Total assets acquired		2,900
Total liabilities assumed		1,617
Net assets acquired and net liabilities assumed		1,283
Goodwill		5,610
Total purchase price		$ 6,893
Moda
Business Acquisition [Line Items]
Cash and cash equivalents	$ 126
Accounts receivable	335
Property and equipment	27
Other assets	23
Total assets acquired	511
Total liabilities assumed	542
Net assets acquired and net liabilities assumed	(31)
Total purchase price	1,926
Goodwill and intangible assets	$ 1,957