CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (Unaudited) (Parenthetical) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Common stock dividends, per share (in dollars per share)	$ 0.06
Unrealized gain on marketable securities, available-for-sale, net	$ (169,000)
ACCUMULATED OTHER COMPREHENSIVE LOSS
Unrealized actuarial loss on defined benefit pension plan, net of taxes	945,000	$ 1,000,000
Unrealized actuarial loss on defined benefit pension plan, tax	585,000	630,000
Unrealized gain on marketable securities, available-for-sale, net	$ 49,000	$ 218,000