CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Mar. 31, 2018	Dec. 31, 2017
Shareholders’ Equity:
Preferred stock, par value (in dollars per share)	$ 0.02	$ 0.02
Preferred stock, authorized (in shares)	1,000,000	1,000,000
Common stock, par value (in dollars per share)	$ 0.02	$ 0.02
Common stock, authorized (in shares)	29,000,000	29,000,000
Common stock, issued (in shares)	17,686,224	17,677,161
Common stock, outstanding (in shares)	15,978,115	15,969,052
Treasury stock, at cost (in shares)	1,708,109	1,708,109