Stock-Based Compensation (Details)	12 Months Ended
	Dec. 31, 2018 USD ($) Installment $ / shares shares	Dec. 31, 2017 USD ($) $ / shares shares
Share-based Payment Award [Line Items]
Stock based compensation expense related to cash-settled RSU's | $	$ (142,000)	$ 74,000
Income tax benefit on stock based compensation | $	53,000	330,000
Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Unrecognized compensation expense | $	$ 800,000
Weighted average remaining service period	1 year 1 month 28 days
Cash received from exercise of stock options | $	$ 136,000	209,000
Aggregate intrinsic value of stock options exercised | $	$ 701,318	$ 364,974
Restricted Stock Units [Member]
Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Nonvested RSUs, beginning balance (in shares)	1,634,663	1,688,480
RSUs granted (in shares)	428,526	644,677
RSUs forfeited	(140,997)	(5,500)
RSUs vested	(350,667)	(692,994)
Nonvested RSUs, ending balance (in shares)	1,571,525	1,634,663
Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Nonvested RSUs at beginning of period (in dollars per share) | $ / shares	$ 1.96	$ 1.45
RSUs granted (in dollars per share) | $ / shares	3.23	3.24
RSUs forfeited (in dollars per share) | $ / shares	2.47	3.40
RSUs vested (in dollars per share) | $ / shares	3.30	1.89
Nonvested RSUs at end of period (in dollars per share) | $ / shares	$ 1.96	$ 1.96
Restricted Stock Units [Member] | Minimum [Member]
Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Requisite service period	1 year
Restricted Stock Units [Member] | Maximum [Member]
Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Requisite service period	5 years
Long Term Incentive Stock Option Plan 1995 [Member]
Share-based Payment Award [Line Items]
Plan Expiration	Apr. 21, 2026
Number of shares authorized (in shares)	7,500,000
Share-based compensation arrangement by share-based payment award, number of shares issued upon exercise of options (in shares)	4,174,981
Stock options remaining to be granted (in shares)	2,247,848
Share based compensation expense | $	$ 1,526,000	$ 2,472,000
Share-based Payment Award, Options, Outstanding [Roll Forward]
Options outstanding, beginning balance (in shares)	1,046,833	1,556,833
Options granted (in shares)	0	0
Options exercised (in shares)	486,500	320,000
Options forfeited (in shares)	505,333	190,000
Options outstanding, ending balance (in shares)	55,000	1,046,833
Options expected to vest (in shares)	0	24,000
Options and warrants exercisable, ending balance (in shares)	55,000	1,022,833
Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Options outstanding, beginning balance (in dollars per share) | $ / shares	$ 3.33	$ 3.15
Options granted (in dollars per share) | $ / shares	0	0
Options exercised (in dollars per share) | $ / shares	1.88	2.05
Options forfeited (in dollars per share) | $ / shares	4.89	4.01
Options outstanding, ending balance (in dollars per share) | $ / shares	1.87	3.33
Options expected to vest (in dollars per share) | $ / shares	0	1.90
Options exercisable (in dollars per share) | $ / shares	$ 0	$ 3.36
Share-based Payment Award, Options, Additional Disclosures [Abstract]
Options outstanding | $	$ 17,000	$ 928,000
Options expected to vest | $	0	33,000
Options exercisable | $	$ 0	$ 895,000
Options outstanding	2 years 29 days	1 year 3 months 11 days
Options expected to vest	0 years	4 years 8 months 19 days
Options exercisable	0 years	1 year 2 months 12 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]
Options granted (in shares)	0	0
Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Nonvested RSUs, ending balance (in shares)	1,571,525
Long Term Incentive Stock Option Plan 1995 [Member] | Installments One [Member]
Share-based Payment Award [Line Items]
Number of Installments | Installment	3
Long Term Incentive Stock Option Plan 1995 [Member] | Installments Two [Member]
Share-based Payment Award [Line Items]
Number of Installments | Installment	5
Long Term Incentive Stock Option Plan 1995 [Member] | Installments Three [Member]
Share-based Payment Award [Line Items]
Number of Installments | Installment	7
Long Term Incentive Stock Option Plan 1995 [Member] | Non-vested Share Activity [Member]
Share-based Payment Award, Options, Outstanding [Roll Forward]
Options granted (in shares)	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]
Nonvested options, beginning balance (in shares)	24,000	72,000
Options granted (in shares)	0	0
Options forfeited	0	0
Options vested during the period	(24,000)	(48,000)
Nonvested options, ending balance (in shares)	0	24,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Nonvested, Weighted average exercise price, shares under option and warrant, beginning balance (in dollars per share) | $ / shares	$ 0.97	$ 0.97
Nonvested, Weighted average exercise price, options granted (in dollars per share) | $ / shares	0	0
Nonvested, Weighted average exercise price, options forfeited (in dollars per share) | $ / shares	0	0
Nonvested, Weighted average exercise price, options vested (in dollars per share) | $ / shares	0.97	0.97
Nonvested, Weighted average exercise price, shares under option and warrant, ending balance (in dollars per share) | $ / shares	$ 0	$ 0.97
Long Term Incentive Stock Option Plan 1995 [Member] | Minimum [Member]
Share-based Payment Award [Line Items]
Term expiration for option to purchase shares	7 years
Long Term Incentive Stock Option Plan 1995 [Member] | Maximum [Member]
Share-based Payment Award [Line Items]
Term expiration for option to purchase shares	10 years