Stock Compensation Plans (Details) (USD $)	3 Months Ended			12 Months Ended		3 Months Ended	12 Months Ended		0 Months Ended		3 Months Ended	12 Months Ended		0 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014 1998 Stock Option Plan [Member]	Dec. 31, 2013 1998 Stock Option Plan [Member]	Dec. 31, 2012 1998 Stock Option Plan [Member]	Mar. 31, 2014 2002 Stock Option Plan [Member]	Dec. 31, 2013 2002 Stock Option Plan [Member]	Dec. 31, 2012 2002 Stock Option Plan [Member]	Aug. 05, 2013 2012 Stock Incentive Plan [Member]	Mar. 04, 2013 2012 Stock Incentive Plan [Member]	Mar. 31, 2014 2012 Stock Incentive Plan [Member]	Dec. 31, 2013 2012 Stock Incentive Plan [Member]	Dec. 31, 2012 2012 Stock Incentive Plan [Member]	Mar. 04, 2014 2012 Stock Incentive Plan [Member] Chief Executive Officer and President [Member]	Aug. 05, 2013 2012 Stock Incentive Plan [Member] Chief Executive Officer and President [Member]	Mar. 04, 2013 2012 Stock Incentive Plan [Member] Chief Executive Officer and President [Member]	Mar. 04, 2014 2012 Stock Incentive Plan [Member] Chief Financial Officer [Member]	Aug. 05, 2013 2012 Stock Incentive Plan [Member] Chief Financial Officer [Member]	Mar. 04, 2013 2012 Stock Incentive Plan [Member] Chief Financial Officer [Member]	Mar. 04, 2014 2012 Stock Incentive Plan [Member] Director [Member]	Mar. 04, 2013 2012 Stock Incentive Plan [Member] Director [Member]	Mar. 04, 2014 2012 Stock Incentive Plan [Member] Other Employees [Member]	Mar. 04, 2013 2012 Stock Incentive Plan [Member] Other Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized to grant options to purchase (in shares)			900,000			1,800,000					1,000,000
Share-based payment award, expiration date			Sep. 30, 2008			Apr. 30, 2012					Apr. 05, 2022
Expected term of stock options in Black-Scholes option pricing model, previous	4 years
Expected term of stock options in Black-Scholes option pricing model, revised	2 years
Stock Option Plans, Number of Shares [Abstract]
Outstanding (in shares)			3,000	78,500	89,750	523,521	702,597	624,700
Granted (in shares)			0	0	0	0	0	181,500
Exercised (in shares)			(1,500)	(500)	0	(52,331)	(165,577)	(33,104)
Cancelled (in shares)			0	(75,000)	(11,250)	(666)	(13,499)	(70,499)
Outstanding (in shares)			1,500	3,000	78,500	470,524	523,521	702,597
Stock Options, Weighted Average Option Exercise Price [Abstract]
Outstanding (in dollars per share)			$ 8.67	$ 12.73	$ 12.83	$ 4.54	$ 5.17	$ 6.15
Granted (in dollars per share)			$ 0	$ 0	$ 0	$ 0	$ 0	$ 4.40
Exercised (in dollars per share)			$ 8.67	$ 8.67	$ 0	$ 6.49	$ 7.15	$ 3.86
Cancelled (in dollars per share)			$ 0	$ 12.92	$ 13.54	$ 3.44	$ 5.41	$ 12.45
Outstanding (in dollars per share)			$ 8.67	$ 8.67	$ 12.73	$ 4.32	$ 4.54	$ 5.17
Other Than Stock Option Plans, Number of Shares [Abstract]
Outstanding (in shares)											249,500	0	0
Granted (in shares)									150,000	100,000	88,648	250,000	0	43,997	100,000	25,000	16,341	50,000	15,000	15,710	20,000	12,600	40,000
Exercised (in shares)											(33,180)	0	0
Cancelled (in shares)											0	(500)	0
Outstanding (in shares)											304,968	249,500	0
Other Than Stock Options, Fair Market Value at Grant [Abstract]
Outstanding (in dollars per share)											$ 5.54	$ 0	$ 0
Granted (in dollars per share)											$ 5.54	$ 5.54	$ 0
Exercised (in dollars per share)											$ 0	$ 0	$ 0
Cancelled (in dollars per share)											$ 5.54	$ 5.54	$ 0
Outstanding (in dollars per share)											$ 5.54	$ 5.54	$ 0
Options Exercisable at [Abstract]
March 31, 2014 (in shares)			1,500			273,144
December 31, 2014 (in shares)			0			122,647
December 31, 2015 (in shares)			0			74,733
December 31, 2016 (in shares)			0			0
December 31, 2017 (in shares)			0			0
December 31, 2018 (in shares)			0			0
Thereafter (in shares)			0			0
Total options exercisable (in shares)			1,500			470,524
Options Weighted Average Option Exercise Price at [Abstract]
March 31, 2014 (in dollars per share)			$ 8.67			$ 4.32
December 31, 2014 (in dollars per share)			$ 8.67			$ 4.32
December 31, 2015 (in dollars per share)			$ 8.67			$ 4.32
December 31, 2016 (in dollars per share)			$ 8.67			$ 4.32
December 31, 2017 (in dollars per share)			$ 8.67			$ 4.32
December 31, 2018 (in dollars per share)			$ 8.67			$ 4.32
Thereafter (in dollars per share)			$ 8.67			$ 4.32
Decrease in income from continuing operations due to change in accounting pronouncement	$ 192,000	$ 66,000
Decrease in net income due to change in accounting pronouncement	$ 119,000	$ 41,000
Net income (loss) per share after change in accounting pronouncement, basic (in dollars per share)	$ 0.78	$ 0.30
Net income (loss) per share after change in accounting pronouncement, diluted (in dollars per share)	$ 0.75	$ 0.30
Net income (loss) per share - basic (in dollars per share)	$ 0.77	$ 0.29
Net income per share - diluted (in dollars per share)	$ 0.74	$ 0.29
Summary information about stock options outstanding [Abstract]
Range of Exercise Price, Minimum (in dollars per share)						$ 2.45
Range of Exercise Price, Maximum (in dollars per share)			$ 8.67			$ 8.32
Options Outstanding (in shares)			1,500			470,524
Weighted Average Contractual Periods in Years			0 years 4 months 2 days			5 years 5 months 12 days
Weighted Average Exercise Price (in dollars per share)			$ 8.67			$ 4.32
Options Exercisable (in shares)			1,500			273,144