CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Statement Of Income and Comprehensive Income [Abstract]
Net income	$ 447	$ 504	$ 302	$ 681
Other comprehensive income:
Retirement benefits adjustment
Total comprehensive income	$ 447	$ 504	$ 302	$ 681