Acquisitions - Pro Forma Consolidated Results (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Business Combinations [Abstract]
Revenues	$ 128,808	$ 115,210	$ 376,909	$ 329,033
Sales, Pro Forma		116,971		334,317
Net income	7,764	5,607	14,303	10,030
Net income, Pro Forma		$ 5,788		$ 10,572
EARNINGS PER COMMON SHARE:
Earnings per common share: basic (in dollars per share)	$ 0.18	$ 0.13	$ 0.33	$ 0.24
Earnings per common share: basic, Pro Forma (in dollars per share)		$ 0.14		$ 0.25
Earnings per common share: diluted (in dollars per share)	$ 0.18	$ 0.13	$ 0.33	$ 0.23
Earnings per common share: diluted, Pro Forma (in dollars per share)		$ 0.14		$ 0.25