CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
CONSOLIDATED BALANCE SHEETS
Accounts receivable, allowance (in dollars)	$ 2,081	$ 1,346
Preferred Stock, par value	$ 0	$ 0
Preferred stock, shares authorized	1,000	1,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock and additional paid-in capital, par value	$ 0	$ 0
Common stock and additional paid-in capital, shares authorized	29,000	29,000
Common stock and additional paid-in capital, shares issued	13,308	12,193
Common stock and additional paid-in capital, shares outstanding	13,308	12,193