CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Accounts receivable, allowance for doubtful accounts (in dollars)	$ 11,900	$ 11,997
Common stock, par value (in dollars per share)
Common stock, authorized shares	40,000,000	40,000,000
Common stock, issued shares	21,344,741	21,344,741
Common stock, outstanding shares	21,344,741	21,344,741