Note 2 - Summary of Significant Accounting Policies (Detail) (USD $)	0 Months Ended	1 Months Ended	3 Months Ended		9 Months Ended										3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended							3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended				3 Months Ended	9 Months Ended
	May 06, 2011	Jul. 31, 2011	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Jun. 30, 2012	Jan. 15, 2012	Dec. 31, 2011	Jul. 19, 2011	Jul. 07, 2011	Feb. 09, 2011	Dec. 31, 2010	Nov. 02, 2010	Sep. 30, 2012 Stock Options [Member]	Sep. 30, 2011 Stock Options [Member]	Sep. 30, 2012 Stock Options [Member]	Sep. 30, 2011 Stock Options [Member]	Sep. 30, 2012 Restricted Stock [Member]	Sep. 30, 2012 Restricted Stock [Member]	Dec. 31, 2011 Restricted Stock [Member]	Sep. 30, 2012 Options and Warrants [Member]	Sep. 30, 2011 Options and Warrants [Member]	Sep. 30, 2011 Equity Component of Earnout Obligation [Member]	Sep. 30, 2012 Subordinated Unsecured Notes [Member]	Sep. 30, 2012 Cash Paid to Settle 2009 and 2010 Acquisitions [Member]	Sep. 30, 2012 Release Of Restriction Associated With Shares Previously Issued [Member]	Sep. 30, 2012 Change In Fair Value [Member]	Sep. 30, 2012 Cost of Sales [Member]	Sep. 30, 2011 Cost of Sales [Member]	Sep. 30, 2012 Cost of Sales [Member]	Sep. 30, 2011 Cost of Sales [Member]	Sep. 30, 2012 Selling, General and Administrative Expenses [Member]	Sep. 30, 2011 Selling, General and Administrative Expenses [Member]	Sep. 30, 2012 Selling, General and Administrative Expenses [Member]	Sep. 30, 2011 Selling, General and Administrative Expenses [Member]	Sep. 30, 2012 United States [Member]	Sep. 30, 2012 Accrued [Member]	Sep. 30, 2012 2012 Incentive Compensation Plan [Member]	Sep. 30, 2012 2012 Incentive Compensation Plan [Member]	Sep. 30, 2012 Senior Secured Revolving Credit Facility [Member]	Sep. 30, 2011 Senior Secured Revolving Credit Facility [Member]	Sep. 30, 2012 Senior Unsecured Notes [Member]	Sep. 30, 2011 Senior Unsecured Notes [Member]
Allowance for Doubtful Accounts Receivable			$ 4,000,000		$ 4,000,000				$ 2,700,000
Cash and Cash Equivalents, at Carrying Value			6,406,000	29,869,000	6,406,000	29,869,000			8,416,000				33,624,000																								3,200,000
Deferred Finance Costs, Gross			7,100,000		7,100,000																																	8,100,000
Incurred Deferred Financing Costs																																									620,000	3,000,000	243,000	6,700,000
Line of Credit Facility, Increase (Decrease), Other, Net	55,000,000	(37,500,000)
Line of Credit Facility, Maximum Borrowing Capacity	300,000,000	262,500,000	100,000,000		100,000,000		60,000,000				262,500,000	245,000,000		180,000,000
Payments of Debt Extinguishment Costs		621,000
Proceeds from Unsecured Notes Payable		250,000,000				250,000,000
Debt Instrument, Interest Rate, Stated Percentage		9.00%						9.00%	9.00%	9.00%
Interest Expense			564,000	499,000	1,600,000	1,400,000
Deferred Revenue			7,900,000		7,900,000				2,600,000
Deferred Costs, Current			5,900,000		5,900,000				1,600,000
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in Shares)																						9,900,000	7,300,000	68,000	68,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares)					2,662,101
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)					$ 4.41
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Grant Date Intrinsic Value (in Dollars per share)					$ 11,700,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period					3 years
Share-based Compensation					12,562,000	5,385,000									3,000,000	2,300,000	9,000,000	5,100,000	114,000	307,000									748,000		2,300,000		2,200,000		6,700,000				(97,000)	3,200,000
Allocated Share-based Compensation Expense																														650,000		1,300,000	122,000	1,600,000	420,000	3,800,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized															22,400,000		22,400,000		425,000	425,000	360,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition																	1 year 146 days			292 days	255 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value			26,040,000		26,040,000										818,000		818,000
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures (in Shares)																				39,000
Remaining To Be Issued Upon Vesting Shares (in Shares)																				7,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period (in Shares)																				4,000
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability					$ 420,000																					$ 343,000	$ 111,000	$ 34,000