Earnings Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013		Dec. 31, 2013	Dec. 31, 2010
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net income available to common shareholders	$ 2,159		$ 1,731		$ 4,224		$ 3,486
Plus: Income impact of assumed conversions: Interest on 10% convertible debentures, net of income tax	130		148		259		296
Income available to common stockholders plus assumed conversions	2,289		1,879		4,483		3,782
Weighted average number of common shares outstanding-basic	7,907,761		7,967,782		7,842,192		7,954,308
Dilutive effect of stock options	44,151	[1]	25,502	[1]	43,860		23,186
Dilutive effect of restricted stock units	28,270	[1],[2]	29,053	[1],[2]	37,997	[2]	35,506	[2]
Dilutive effect of convertible promissory notes	1,635,000	[3]	1,880,000	[3]	1,635,000	[3]	1,880,000	[3]
Dilutive potential common shares	1,707,421		1,934,555		1,716,857		1,938,692
Adjusted weighted-average shares	9,615,182		9,902,337		9,559,049		9,893,000
Basic Earnings Per Share	$ 0.27		$ 0.22		$ 0.54		$ 0.44
Diluted Earnings Per Share	$ 0.24		$ 0.19		$ 0.47		$ 0.38
Convertible promissory notes	$ 8,175		$ 9,400		$ 8,175		$ 9,400		$ 9,400	$ 9,500
Conversion ratio of principal to shares					20.00%
Percentage of original principal amount convertible prior to conversion date, maximum					100.00%
Conversion date of convertible notes					Oct. 01, 2014
Percentage of original principal amount	50.00%				50.00%
Conversion price per share	$ 5.00				$ 5.00
Convertible Notes [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Dilutive effect of convertible promissory notes					1,635,000		1,880,000
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Securities excluded from computation of earnings per share					64,130		53,176
Restricted Stock Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Securities excluded from computation of earnings per share					15,040		68,572

[1] For the three and six months ended June 30, 2014 and 2013, there were 64,130 and 53,176 outstanding stock options that were not included in the computation of diluted earnings per share because they were considered anti-dilutive.

[2] For the three and six months ended June 30, 2014 and 2013, respectively, there were 15,040 and 68,572 outstanding restricted stock units, respectively, that were not included in the computation of diluted earnings per share because they were considered anti-dilutive.

[3] At June 30, 2014 and 2013, respectively, the Company had $8.18 million and $9.40 million of outstanding Convertible Promissory Notes (the “Convertible Notes”). The Convertible Notes are convertible into shares of common stock of the Company at a conversion ratio of one share of common stock for each $5.00 in aggregate principal amount held on the record date of the conversion subject to certain adjustments as described in the Convertible Notes (the “Conversion Ratio”). Prior to the quarterly interest date preceding the fifth anniversary of issuance of the Convertible Notes each holder of the Convertible Notes may convert up to 100% (at the discretion of the holder) of the original principal amount into shares of common stock at the Conversion Ratio. On October 1, 2014, one-half of the original principal amounts of the Convertible Notes are mandatorily convertible at the Conversion Ratio if voluntary conversion has not yet occurred. The principal amount of any Convertible Note that has not been converted will be payable at maturity on June 30, 2017. At June 30, 2014 and 2013, respectively, the entire 1,635,000 and 1,880,000 of common shares are included in the computation of diluted earnings per share since the average market price per share for the three and six months ended June 30, 2014 and 2013 exceeded the conversion price of $5.00 per share.