Acquisitions (Details) - USD ($) $ in Thousands			3 Months Ended			5 Months Ended	9 Months Ended
	May 11, 2018	Sep. 20, 2017	Sep. 30, 2018	Sep. 30, 2017		Sep. 30, 2018	Sep. 30, 2018	Sep. 30, 2017		Dec. 31, 2017
Business Acquisition [Abstract]
Cash consideration before working capital adjustment		$ 8,750
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Goodwill			$ 12,185			$ 12,185	$ 12,185			$ 8,431
Business Combination, Acquired Receivables [Abstract]
Revenue			21,801	$ 15,409	[1]		69,394	$ 48,876	[1]
Net loss			(518)	(605)			(1,033)	(44)
Acquired Finite-Lived Intangible Assets [Abstract]
Finite-lived intangible assets acquired	$ 5,088	$ 2,569
Business Acquisition, Pro Forma Information [Abstract]
Revenue			21,801	24,975			72,564	83,337
Net loss			(361)	$ (736)			(2,178)	$ (1,224)
Minimum [Member]
Acquired Finite-Lived Intangible Assets [Abstract]
Finite-lived intangible assets, weighted average useful life	4 years	3 years
Maximum [Member]
Acquired Finite-Lived Intangible Assets [Abstract]
Finite-lived intangible assets, weighted average useful life	15 years	10 years
Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Abstract]
Finite-lived intangible assets acquired	$ 3,758	$ 1,856
Finite-lived intangible assets, weighted average useful life	15 years	10 years
Trademarks/Names [Member]
Acquired Finite-Lived Intangible Assets [Abstract]
Finite-lived intangible assets acquired	$ 582	$ 713
Finite-lived intangible assets, weighted average useful life	10 years	3 years
Non-compete Agreements [Member]
Acquired Finite-Lived Intangible Assets [Abstract]
Finite-lived intangible assets acquired	$ 221
Finite-lived intangible assets, weighted average useful life	4 years
Alliance Agreements [Member]
Acquired Finite-Lived Intangible Assets [Abstract]
Finite-lived intangible assets acquired	$ 527
Finite-lived intangible assets, weighted average useful life	5 years
True North Consulting, LLC [Member]
Business Acquisition [Abstract]
Percentage of ownership interest acquired	100.00%
Business acquisition, name of acquired entity	True North Consulting LLC
Business acquisition, effective date of acquisition	May 11, 2018
Cash purchase price	$ 9,941
Cash consideration before working capital adjustment	9,750
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Cash	306
Contract receivables	2,345
Prepaid expenses and other current assets	4
Property, and equipment, net	1
Intangible assets	5,088
Accounts payable, accrued expenses, and other liabilities	(1,420)
Accrued compensation	(137)
Total identifiable net assets	6,187
Goodwill	3,754
Net assets acquired	9,941
Business Combination, Acquired Receivables [Abstract]
Tax deductible goodwill	3,754
Cash consideration in escrow	1,463
Proceeds from issuance of debt	$ 10,300
Transaction costs			$ 491			491	$ 491
Revenue						3,684
Net loss						$ (388)
Absolute Consulting, Inc. [Member]
Business Acquisition [Abstract]
Percentage of ownership interest acquired		100.00%
Business acquisition, name of acquired entity		Absolute Consulting, Inc.
Business acquisition, effective date of acquisition		Sep. 20, 2017
Cash purchase price		$ 9,521
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Cash		455
Contract receivables		5,121
Prepaid expenses and other current assets		68
Property, and equipment, net		184
Intangible assets		2,569
Accounts payable, accrued expenses, and other liabilities		(78)
Accrued compensation		(1,617)
Total identifiable net assets		6,702
Goodwill		2,819
Net assets acquired		9,521
Business Combination, Acquired Receivables [Abstract]
Tax deductible goodwill		2,819
Cash consideration in escrow		$ 1,000

[1] Prior period amounts have not been adjusted under the modified retrospective transition method for the adoption of ASC 606.