Employee Benefits (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended			36 Months Ended
	Jan. 01, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of matched funds for employee contributions		100.00%	100.00%	100.00%
Percentage of employer matching contribution			1.00%	1.00%	2.00%
Employee contributions expenses		$ 126	$ 47	$ 18
Weighted average fair value of options granted		$ 7.18	$ 6.43
Stock options expense		$ 521	$ 1,007	554
Unrecognized compensation cost related to non-vested options		$ 738			$ 738
Recognition period of nonvested stock options		1 year 8 months 1 day
Intrinsic value of outstanding options		$ 11,469			11,469
Intrinsic value of exercisable options		9,312			9,312
Exercise of stock options		50	378	$ 942
Intrinsic value for options exercised		163
Tax benefit for options exercised		$ 23
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock options issued		11,250
Contractual term of awards		10 years
Exercise of stock options		$ 50
Stock Options | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		3 years
Stock Options | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		5 years
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted shares issued		110,500
Vesting period		6 years
Stock options expense		$ 574	$ 496
Unrecognized compensation cost related to non-vested options		$ 5,387			$ 5,387
Recognition period of nonvested stock options		5 years 4 months 6 days
2007 Stock Option Plan ("the 2007 Plan")
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of maximum shares of common stock to be issued		270,000			270,000
Number of stock options issued		269,500
2011 Stock Compensation Plan ("the 2011 Plan")
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of maximum shares of common stock to be issued		754,607			754,607
Number of shares available for issuance under stock compensation plan		62			62
2017 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of maximum shares of common stock to be issued		300,000			300,000
Number of shares available for issuance under stock compensation plan		6,750			6,750
2019 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of maximum shares of common stock to be issued		300,000			300,000
Number of shares available for issuance under stock compensation plan		226,000			226,000
2019 Equity Incentive Plan | Stock Options | Forecast
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock options issued	100,000
2019 Equity Incentive Plan | Restricted Stock | Forecast
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock options issued	126,000