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Stockholders' Equity - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Jun. 16, 1999
Class of Stock [Line Items] |  |  |
Liquidation value of outstanding preferred stock | $ 3,649 |  |
Preferred stock voting right | Series AA preferred stock is entitled to one vote per share and the Class A preferred stock is not entitled to vote |  |
Class B common stock voting rights | Holders of Class B common stock have ten votes per share on all matters in which the holders of common stock are entitled to vote and holders of Class A common stock have one vote per share on such matters |  |
Series AA Preferred Stock [Member] |  |  |
Class of Stock [Line Items] |  |  |
Preferred stock, shares authorized | 5,720 | 5,720 | 5,720
Preferred stock, par value | $ 0.001 | $ 0.001 |
Dividends paid to preferred stock | $ 15.95 |  |
Amount entitled | $ 638 |  |
Preferred Class A [Member] |  |  |
Class of Stock [Line Items] |  |  |
Preferred stock, shares authorized | 10,000 | 10,000 | 1,000,000
Preferred stock, par value | $ 638 | $ 638 |
Dividends paid to preferred stock | $ 15.95 |  |
Amount entitled | $ 638 |  |

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- Definition Description of voting rights of common stock. Includes eligibility to vote and votes per share owned. Include also, if any, unusual voting rights. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 + Details
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- Definition The per share liquidation preference (or restrictions) of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21484-112644 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph d -Article 4 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(d)(1)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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