Debt - Schedule of Company's Debt (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Unamortized discount	$ (17,202)	$ (19,955)
Net carrying value	247,432	302,679
Long-term Debt, Gross	264,634	322,634
Monoprice Credit Facility
Debt Instrument [Line Items]
Unamortized discount	(206)	(288)
Net carrying value	43,794	49,712
Long-term Debt, Gross	44,000	50,000
TaxACT 2013 credit facility
Debt Instrument [Line Items]
Unamortized discount	0	0
Net carrying value	19,384	71,384
Long-term Debt, Gross	19,384	71,384
Convertible Senior Notes
Debt Instrument [Line Items]
Unamortized discount	(16,996)	(19,667)
Net carrying value	184,254	181,583
Long-term Debt, Gross	$ 201,250	$ 201,250

Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

Name:	us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant