Additional aggregate principal amount.

No definition available.

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Balance Type:	debit
Period Type:	duration

- Definition

Class Of Warrant Or Right Exercise Price Of Warrants Or Rights Issued

+ References

No definition available.

+ Details

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- Definition

Class Of Warrant Or Right Number Of Securities Called By Warrants

+ References

No definition available.

+ Details

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- Definition

Common Shares Attributable To Conversion Of Debt Instrument

+ References

No definition available.

+ Details

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- Definition

Common Stock Shares Excluding Subject To Conversion

+ References

No definition available.

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- Definition

Deferred Financing Cost, Amortization Period

+ References

No definition available.

+ Details

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- Definition

Number Of Trading Period Consider For Weight Average Price Of Common Stock.

+ References

No definition available.

+ Details

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- Definition

Pledge Percentage Of Capital Stock

+ References

No definition available.

+ Details

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- Definition

The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586

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-Publisher FASB

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-Topic 230

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Price of the entity's common stock which would be required to be attained for the conversion feature embedded in the debt instrument to become effective.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

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-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: 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(a)(1))

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

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: 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(a)(2))

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

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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- Definition

For an unclassified balance sheet, the carrying amount (net of accumulated amortization) as of the balance sheet date of capitalized costs associated with the issuance of debt instruments (for example, legal, accounting, underwriting, printing, and registration costs) that will be charged against earnings over the life of the debt instruments to which such costs pertain.

+ References

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-Publisher FASB

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-Topic 835

-SubTopic 30

-Section 45

-Paragraph 3

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-Paragraph 1

-Subparagraph (SX 210.5-02.17)

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

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Period Type:	instant

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

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

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- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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- Definition

Number of shares that have been repurchased and retired during the period.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

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Debt - Additional Information (Detail) - USD ($)					3 Months Ended	6 Months Ended		12 Months Ended
Debt - Additional Information (Detail) - USD ($)	Apr. 27, 2015	Mar. 13, 2014	Apr. 01, 2009	Mar. 31, 2009	Jul. 05, 2015	Jul. 05, 2015	Jun. 29, 2014	Dec. 31, 2014
Debt Instrument
Term of loan, years	5 years
Pledge percentage of capital stock	65.00%
Payments of long-term debt							$ 190,975,000
Common stock shares were issued for warrants exercised								21,200,000
Strike price per share of warrant								$ 7.6348
Maximum
Debt Instrument
Aggregate principal amount	$ 150,000,000
Commitment fee percentage of unused portion of credit facility	0.35%
Minimum
Debt Instrument
Commitment fee percentage of unused portion of credit facility	0.125%
Base Rate \| Maximum
Debt Instrument
Debt instrument, basis spread on variable rate	1.00%
Base Rate \| Minimum
Debt Instrument
Debt instrument, basis spread on variable rate	0.00%
London Interbank Offered Rate (LIBOR) \| Maximum
Debt Instrument
Debt instrument, basis spread on variable rate	2.00%
London Interbank Offered Rate (LIBOR) \| Minimum
Debt Instrument
Debt instrument, basis spread on variable rate	1.00%
Revolving Credit Facility
Debt Instrument
Credit facility, borrowing capacity	$ 350,000,000
Financing cost					$ 2,300,000	$ 2,300,000
Financing cost, amortization term					5 years
4.50% Convertible Senior Notes Due March 15, 2014
Debt Instrument
Aggregate principal amount			$ 190,000,000	$ 175,000,000
Debt instrument, interest rate, stated percentage				4.50%
Additional aggregate principal amount			$ 15,000,000	$ 1,000
Senior notes maturity date			Mar. 15, 2014	Mar. 15, 2014
Conversion rate in number of shares				182.65				131.95
Number of shares excluded for conversion rate calculation								50.7
Trading days used to determine average price per share								25 days
Average trading price of common shares								$ 19.74
Payments of long-term debt						$ 190,000,000
Stock issued in conversion of notes						25,100,000
Stock received and retired		25,100,000