Share Based Compensation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2016	Jun. 30, 2015
Share based compensation arrangements [Line Items]
Number of additional shares approved for grant (in shares)					200,000
Total compensation cost not yet recognized	$ 2,100				$ 2,100
Total compensation cost not yet recognized, period for recognition					2 years
Information regarding options exercised [Abstract]
Intrinsic value	60		$ 187		$ 177	$ 243
Cash proceeds received	27		67		59	82
Tax benefit realized	$ 21		$ 65		62	85
Long-term Incentive Plan [Member]
Share based compensation arrangements [Line Items]
Number of stock units or restricted shares issued in period (in shares)	0		0
Total compensation expense recognized	$ 400		$ 400		800	700
Tax benefit relating to compensation expense recognized	$ 100		100		$ 300	$ 300
Stock Options [Member]
Outstanding stock option grants and transaction [Roll Forward]
Outstanding, beginning balance (in shares)		235,596			235,596
Granted (in shares)					0
Exercised (in shares)					(16,014)
Forfeited (in shares)					(664)
Expired (in shares)					(400)
Outstanding, ending balance (in shares)	218,518				218,518
Vested and expected to vest, period end (in shares)	218,518				218,518
Exercisable, period end (in shares)	218,518				218,518
Weighted Average Exercise Price [Roll Forward]
Outstanding, beginning balance (in dollars per share)		$ 4.94			$ 4.94
Exercised (in dollars per share)					3.69
Forfeited (in dollars per share)					6.42
Expired (in dollars per share)					4.25
Outstanding, ending balance (in dollars per share)	$ 5.02				5.02
Vested and expected to vest, period end (in dollars per share)	5.02				5.02
Exercisable, period end (in dollars per share)	$ 5.02				$ 5.02
Weighted-Average Remaining Contractual Term [Abstract]
Outstanding, Weighted Average Remaining Contractual Term					5 years 6 months 14 days
Vested and Expected to Vest, Weighted-Average Remaining Contractual Term					5 years 6 months 14 days
Exercisable, Weighted Average Remaining Contractual Term					5 years 6 months 14 days
Aggregate intrinsic value [Abstract]
Outstanding, Aggregate Intrinsic Value	$ 2,109				$ 2,109
Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value	2,109				2,109
Exercisable, Aggregate Intrinsic Value	$ 2,109				$ 2,109
Non-Vested Restricted Stock, Restricted Stock Units and PSU's [Member]
Number of Shares [Roll Forward]
Outstanding, beginning balance (in shares)		261,981			261,981
Granted (in shares)					96,660
Vested (in shares)					(107,795)
Forfeited (in shares)					(4,924)
Outstanding, ending balance (in shares)	245,922				245,922
Weighted Average Grant Date Fair Value [Roll Forward]
Outstanding, beginning balance (in dollars per share)		$ 11.29			$ 11.29
Granted (in dollars per share)					14.39
Vested (in dollars per share)					7.92
Forfeited (in dollars per share)					13.24
Outstanding, ending balance (in dollars per share)	$ 13.94				$ 13.94
Director [Member]
Share based compensation arrangements [Line Items]
Shares issues as retainer fees (in shares)					4,000	2,000
Non-Employee Directors [Member]
Share based compensation arrangements [Line Items]
Number of additional shares approved for grant (in shares)					200,000
Total compensation expense recognized	$ 30		20		$ 60	$ 30
Tax benefit relating to compensation expense recognized	$ 10		$ 10		$ 20	$ 10
Officers [Member] | Restricted Stock [Member] | Long-term Incentive Plan [Member]
Share based compensation arrangements [Line Items]
Number of stock units or restricted shares issued in period (in shares)		70,000		70,000
Vesting period		3 years		3 years
Officers [Member] | Performance Stock Units [Member] | Long-term Incentive Plan [Member]
Share based compensation arrangements [Line Items]
Number of stock units or restricted shares issued in period (in shares)		30,000		30,000
Vesting period		3 years		3 years