CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
CURRENT ASSETS:
Cash and cash equivalents	$ 60,223	$ 84,520
Short-term investments		314
Accounts receivable (less allowances of $3,029 in 2013 and $2,499 in 2012)	86,919	97,583
Deferred income taxes	865	864
Other current assets (includes restricted cash of $1,692 in 2013 and $1,917 in 2012)	16,215	21,997
Total current assets	164,222	205,278
Property and equipment, net	64,984	66,169
Goodwill	368,556	369,137
Intangible assets, net	157,287	180,156
Deferred income taxes	171	171
Other non-current assets (includes restricted cash of $3,809 in 2013 and $4,178 in 2012)	16,480	16,300
Total assets	771,700	837,211
CURRENT LIABILITIES:
Current portion of long-term debt	34,335	76,950
Accounts payable	5,480	7,794
Accrued liabilities	31,576	38,291
Deferred income taxes	24	37
Deferred revenue	1,828	1,627
Total current liabilities	73,243	124,699
Long-term debt, net of current portion	352,026	376,968
Deferred income taxes	25,285	28,028
Other non-current liabilities	19,712	16,322
Total liabilities	470,266	546,017
STOCKHOLDERS' EQUITY:
Preferred stock, $0.001 par value-Authorized 15,000 shares; issued and outstanding-none
Common stock, $0.001 par value-Authorized 200,000 shares; 29,485 issued and 27,981 outstanding at September 30, 2013; 29,163 issued and 27,659 outstanding at December 31, 2012	29	29
Treasury stock, at cost	(35,548)	(35,548)
Additional capital	658,306	647,515
Accumulated other comprehensive loss	(2,810)	(1,655)
Accumulated deficit	(318,543)	(319,147)
Total stockholders' equity	301,434	291,194
Total liabilities and stockholders' equity	$ 771,700	$ 837,211