Business Acquisitions (Details Textual) (USD $)	12 Months Ended			1 Months Ended	47 Months Ended	1 Months Ended						38 Months Ended				12 Months Ended		25 Months Ended	1 Months Ended	6 Months Ended	1 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Feb. 28, 2010 Etesius Limited [Member]	Dec. 31, 2013 Etesius Limited [Member]	Feb. 28, 2014 Etesius Limited [Member] Subsequent event [Member]	Feb. 28, 2010 Etesius Limited [Member] Initial payment [Member]	Feb. 28, 2010 Etesius Limited [Member] Obligations [Member]	Feb. 28, 2010 Etesius Limited [Member] Deferred Payments [Member]	Feb. 28, 2010 Etesius Limited [Member] Potential Additional Variable Payments (Earn Out) [Member]	Nov. 30, 2010 TJG Holdings LLC [Member] Initial payment [Member]	Dec. 31, 2013 TJG Holdings LLC [Member] Initial payment [Member]	Jan. 31, 2012 CRC Management Consultants LLP [Member]	Jun. 29, 2012 QFS Limited [Member]	Nov. 30, 2012 Nordic Profit Provider AB [Member]	Dec. 31, 2012 Business Strategy, Inc. [Member]	Dec. 31, 2011 Business Strategy, Inc. [Member]	Dec. 31, 2013 Business Strategy, Inc. [Member]	Dec. 31, 2011 Business Strategy, Inc. [Member] Initial payment [Member]	Jun. 30, 2012 Business Strategy, Inc. [Member] Additional payment [Member]	Dec. 31, 2011 Business Strategy, Inc. [Member] Performance Requirement [Member]	Dec. 31, 2011 Business Strategy, Inc. [Member] Audit Claim Recovery [Member]
Business Acquisitions (Textual) [Abstract]
Payments for business acquisition	$ 0	$ 1,542,000	$ 3,155,000	$ 3,100,000			$ 2,800,000	$ 300,000			$ 2,300,000								$ 2,800,000	$ 700,000
Contingent consideration, liability									1,200,000		1,400,000	0						2,500,000
Contingent consideration, payment term									4 years	4 years											2 years	2 years
Contingent consideration, liability, maximum										3,800,000	1,900,000										5,500,000	8,000,000
Payment of contingent consideration					500,000	700,000						1,900,000						3,700,000
Payment of contingent consideration, cash																		2,300,000
Payment of contingent consideration, common stock (in shares)																		217,155
Payment of contingent consideration, common stock, amount																		1,400,000
Earn-out period for contingent consideration											2 years
Total estimated purchase price											3,700,000		1,000,000	400,000	100,000	11,919,000	11,900,000
Revenue of acquiree recognized since acquisition date																10,900,000	800,000
Earnings of acquiree recognized since acquisition date																1,500,000	100,000
Shares issued in business acquisition																			640,614
Value of shares issued in business acquisition	1,472,000		3,722,000																3,700,000
Increase in contingent consideration liability												(500,000)				(4,900,000)		(1,300,000)
Business combination, adjustment to initial fair value accounting																	12,200,000
Goodwill, reduction due to fair value adjustment																	(200,000)
Business combination, decrease in fair value of purchase price																	(200,000)
Goodwill	13,686,000	13,669,000	12,946,000													7,577,000
Goodwill, deductible for income tax purposes																$ 1,500,000