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Stockholders' Equity - Stock Options Outstanding and Exercisable (Parenthetical) (Detail)	Dec. 31, 2015 shares
$7.86 - $8.01 [Member]
Stockholders Equity [Line Items]
Stock Options Outstanding, Shares Outstanding	57,525
Stock Options Exercisable, Shares Outstanding	37,525
$9.69 - $9.97 [Member]
Stockholders Equity [Line Items]
Stock Options Outstanding, Shares Outstanding	19,920
Stock Options Exercisable, Shares Outstanding	19,920
$29.99 - $34.50 [Member]
Stockholders Equity [Line Items]
Stock Options Outstanding, Shares Outstanding	655,335
Stock Options Exercisable, Shares Outstanding	195,480
Discontinued Operations [Member] | $7.86 - $8.01 [Member]
Stockholders Equity [Line Items]
Stock Options Outstanding, Shares Outstanding	40,000
Stock Options Exercisable, Shares Outstanding	20,000
Discontinued Operations [Member] | $9.69 - $9.97 [Member]
Stockholders Equity [Line Items]
Stock Options Outstanding, Shares Outstanding	6,215
Stock Options Exercisable, Shares Outstanding	6,215
Discontinued Operations [Member] | $29.99 - $34.50 [Member]
Stockholders Equity [Line Items]
Stock Options Outstanding, Shares Outstanding	164,810
Stock Options Exercisable, Shares Outstanding	54,025

X

- Definition

Stockholders equity.

+ References

No definition available.

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- Definition

The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(iii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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