Acquisitions - Pro Forma Consolidated Results (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Business Combinations [Abstract]
Revenues	$ 128,865	$ 109,875	$ 248,101	$ 213,823
Sales, Pro Forma		111,636		217,346
Net income	3,716	3,752	6,539	4,423
Net income, Pro Forma		$ 3,933		$ 4,784
EARNINGS PER COMMON SHARE:
Earnings per common share: basic (in dollars per share)	$ 0.09	$ 0.09	$ 0.15	$ 0.10
Earnings per common share: basic, Pro Forma (in dollars per share)		$ 0.09		$ 0
Earnings per common share: diluted (in dollars per share)	$ 0.09	$ 0.09	$ 0.15	$ 0.10
Earnings per common share: diluted, Pro Forma (in dollars per share)		$ 0.09		$ 0