Business Combination - Avatar (Details) - USD ($)		3 Months Ended	6 Months Ended
	May 02, 2016	Jun. 30, 2016	Jun. 30, 2016
Business Acquisitions
Purchase price, net of cash acquired			$ 16,744,000
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Business Acquisitions
Purchase price, net of cash acquired	$ 16,700,000
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Preliminary allocation of fair value of the acquisition:
Accounts receivable	2,632,000
Unbilled revenue	952,000
Other current assets	538,000
Property and equipment	495,000
Goodwill and intangible assets	15,470,000
Total assets acquired	20,087,000
Liabilities assumed:
Deferred revenue	(1,659,000)
Other current liabilities	(1,684,000)
Net assets acquired	$ 16,744,000
General and administrative | Avatar
Other information
Transaction expenses		$ 934,000	$ 969,000