Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 99,376	$ 77,004
Receivables — net of allowance of $2,238 and $900, respectively	31,300	22,200
Deferred income taxes-current	1,037	720
Prepaid expenses	3,020	2,375
Other current assets	1,591	1,977
Total current assets	136,324	104,276
Property and equipment—net	22,617	25,815
Restricted cash	345	125
Deferred income taxes-noncurrent	4,833	5,495
Other assets	1,324	1,534
Total assets	165,443	137,245
Current liabilities:
Accounts payable	1,682	2,176
Accrued liabilities:
Taxes payable	2,965	2,437
Circuit cost	9,058	8,987
Rent	2,046	2,071
Payroll and related items	4,603	3,079
Other	1,041	1,674
Total current liabilities	21,395	20,424
Shareholders’ equity:
Preferred stock—par value of $.001; 50,000 authorized shares; no shares issued and outstanding at September 30, 2014 and December 31, 2013,
Common stock—par value of $.001; 150,000 authorized shares; 33,118 shares and 32,215 shares issued and outstanding at September 30, 2014 and December 31, 2013, respectively	33	32
Less treasury stock, at cost; 3,351 shares at September 30, 2014 and December 31, 2013	(51,668)	(51,668)
Additional paid-in capital	212,698	203,989
Accumulated deficit	(17,015)	(35,532)
Total shareholders’ equity	144,048	116,821
Total liabilities and shareholders' equity	$ 165,443	$ 137,245