Annual report pursuant to section 13 and 15(d)

Quarterly Financial Data (Unaudited) (Quarterly Financial Data 2011) (Detail)

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Quarterly Financial Data (Unaudited) (Quarterly Financial Data 2011) (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2010
Sep. 30, 2010
Jun. 30, 2010
Mar. 31, 2010
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Revenues $ 172,177 $ 159,834 $ 163,385 $ 154,715 $ 107,269 $ 48,898 $ 60,231 $ 57,202         $ 650,111 $ 273,600 $ 194,526
Expenses 174,130 [1],[2] 166,372 [1],[2] 168,971 [1],[2] 162,641 [1],[2] 118,061 [3],[4] 51,684 [3],[4] 59,710 [3] 56,447 55,515 51,341 49,625 48,135      
Loss before item shown below (1,953) (6,538) (5,586) (7,926)                 (22,003) (12,302) (10,090)
Change in fair value of contingent consideration 0 909 647 5,555                 7,111 0 0
Loss before income taxes (1,953) (5,629) (4,939) (2,371)                 (14,892) (12,302) (10,090)
Income (loss) before income taxes         (10,792) (2,786) 521 755 (907) (2,978) (2,041) (4,164)      
Net loss $ (2,355) $ (6,037) $ (4,983) $ (2,979) $ 6,354 [5] $ (3,070) $ 200 $ 409 $ (1,114) $ (3,205) $ (2,229) $ (4,403)      
Basic and diluted income (loss) per common share $ (0.01) $ (0.03) $ (0.03) $ (0.02) $ 0.03 [6] $ (0.02) [6] $ 0.00 [6] $ 0.00 [6]         $ (0.09) $ 0.02 $ (0.06)
Basic weighted average common shares         182,870,313 182,810,137 183,048,031 183,366,512         183,572,582 183,023,590 175,698,489
Diluted weighted average common shares         194,014,913 182,810,137 187,005,916 186,327,158         183,572,582 189,014,028 175,698,489
Basic and diluted weighted average common shares 187,699,397 183,460,777 183,551,171 183,679,060                      
[1] Includes a $1,364, $1,227, $1,054 and $1,099 charge for non-cash compensation in the first, second, third and fourth quarters of 2012, respectively.
[2] Includes $1,792, $1,791, $1,712 and $2,051 of amortization of retention loans in the first, second, third and fourth quarters of 2012, respectively.
[3] Includes a $957, $1,127, $688 and $1,242 charge for non-cash compensation in the first, second, third and fourth quarters of 2011, respectively.
[4] Includes $700 and $2,271, in acquisition-related expenses in the third and fourth quarters of 2011, respectively, and $1,634 of amortization of retention loans in the fourth quarter of 2011.
[5] Includes deferred tax benefit of $18,329 resulting from reduction of valuation allowance (see Note 11).
[6] Due to rounding, the sum of the quarters' basic and diluted income (loss) per common share amounts does not equal the full fiscal year amount.