Share Based Compensation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				9 Months Ended
	Sep. 30, 2016	Mar. 31, 2016	Sep. 30, 2015	Mar. 31, 2015	Sep. 30, 2016	Sep. 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	$ 2,200				$ 2,200
Total compensation cost not yet recognized, period for recognition					2 years 2 months 12 days
Information regarding options exercised [Abstract]
Intrinsic value	9		$ 71		$ 186	$ 314
Cash proceeds received	5		23		64	105
Tax benefit realized	3		25		65	110
Long-term Incentive Plan [Member]
Share based compensation arrangements [Line Items]
Total compensation expense recognized	300		400		1,100	1,100
Tax benefit relating to compensation expense recognized	$ 100		100		$ 400	$ 400
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)					(16,912)
Forfeited (in shares)					(664)
Expired (in shares)					(2,300)
Outstanding, ending balance (in shares)	215,720				215,720
Vested and expected to vest, period end (in shares)	215,720				215,720
Exercisable, period end (in shares)	215,720				215,720
Weighted Average Exercise Price [Roll Forward]
Outstanding, beginning balance (in dollars per share)		$ 4.94			$ 4.94
Exercised (in dollars per share)					3.78
Forfeited (in dollars per share)					6.42
Expired (in dollars per share)					3.54
Outstanding, ending balance (in dollars per share)	$ 5.04				5.04
Vested and expected to vest, period end (in dollars per share)	5.04				5.04
Exercisable, period end (in dollars per share)	$ 5.04				$ 5.04
Weighted-Average Remaining Contractual Term [Abstract]
Outstanding, Weighted Average Remaining Contractual Term					5 years 3 months 29 days
Vested and Expected to Vest, Weighted-Average Remaining Contractual Term					5 years 3 months 29 days
Exercisable, Weighted Average Remaining Contractual Term					5 years 3 months 29 days
Aggregate intrinsic value [Abstract]
Outstanding, Aggregate Intrinsic Value	$ 2,544				$ 2,544
Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value	2,544				2,544
Exercisable, Aggregate Intrinsic Value	$ 2,544				$ 2,544
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)					121,660
Vested (in shares)					(107,795)
Forfeited (in shares)					(4,924)
Outstanding, ending balance (in shares)	270,922				270,922
Weighted Average Grant Date Fair Value [Roll Forward]
Outstanding, beginning balance (in dollars per share)		$ 11.29			$ 11.29
Granted (in dollars per share)					15.05
Vested (in dollars per share)					7.92
Forfeited (in dollars per share)					13.24
Outstanding, ending balance (in dollars per share)	$ 14.28				$ 14.28
Director [Member]
Share based compensation arrangements [Line Items]
Shares issues as retainer fees (in shares)					6,000	4,000
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		$ 90	$ 50
Tax benefit relating to compensation expense recognized	$ 10		$ 10		$ 30	$ 20
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
Officers and Employees [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)	10,000
Officers and Employees [Member] | Restricted Stock [Member] | Long-term Incentive Plan [Member] | Maximum [Member]
Share based compensation arrangements [Line Items]
Vesting period	4 years
Officers and Employees [Member] | Restricted Stock [Member] | Long-term Incentive Plan [Member] | Minimum [Member]
Share based compensation arrangements [Line Items]
Vesting period	1 year
Officers and Employees [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)	20,000
Officers and Employees [Member] | Performance Stock Units [Member] | Long-term Incentive Plan [Member] | Maximum [Member]
Share based compensation arrangements [Line Items]
Vesting period	5 years
Officers and Employees [Member] | Performance Stock Units [Member] | Long-term Incentive Plan [Member] | Minimum [Member]
Share based compensation arrangements [Line Items]
Vesting period	4 years