Shareholders' Equity - 2012 Long-Term Incentive Plan (Details) - USD ($)				12 Months Ended
	Aug. 14, 2020	Jan. 01, 2020	May 25, 2018	Dec. 31, 2020	Dec. 31, 2019
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Expense recognized for issuance of restricted shares				$ 339,000	$ 316,000
Unvested Shares Recognized				286,000
Non-employee directors
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Number of restricted stock issued	11,328
Compensation expense not yet recognized	$ 100,000
2012 Long Term Incentive Plan
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Number of shares authorized for issuance				300,000
Number of restricted stock shares vested		26,250
Shares withheld to satisfy the tax obligations		9,543
Value of shares withheld and repurchased		$ 99,000
2012 Long Term Incentive Plan | Executive Officer
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Number of restricted stock issued			78,750
Compensation expense not yet recognized			$ 735,000
2012 Long Term Incentive Plan | Non-employee directors
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Vesting period of restricted share awards				12 months