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Subsequent Events - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions |  |  | 12 Months Ended
--- | --- | --- | ---
Jun. 10, 2015 | Jun. 05, 2015 | Apr. 30, 2015
Subsequent Event [Line Items] |  |  |
Financial covenants amount |  |  | $ 50.0
Value of common shares repurchases permitted, dividends paid and permitted acquisitions for any fiscal year |  |  | $ 125.0
Minimum |  |  |
Subsequent Event [Line Items] |  |  |
Quarterly Commitment Fees on the Facility's unused commitments |  |  | 0.25%
Maximum |  |  |
Subsequent Event [Line Items] |  |  |
Quarterly Commitment Fees on the Facility's unused commitments |  |  | 0.35%
London Interbank Offered Rate (LIBOR) |  |  |
Subsequent Event [Line Items] |  |  |
Applicable margin on variable interest rate |  |  | 1.50%
London Interbank Offered Rate (LIBOR) | Minimum |  |  |
Subsequent Event [Line Items] |  |  |
Applicable margin on variable interest rate |  |  | 0.50%
London Interbank Offered Rate (LIBOR) | Maximum |  |  |
Subsequent Event [Line Items] |  |  |
Applicable margin on variable interest rate |  |  | 1.50%
Base Rate Loans | Minimum |  |  |
Subsequent Event [Line Items] |  |  |
Applicable margin on variable interest rate |  |  | 0.00%
Base Rate Loans | Maximum |  |  |
Subsequent Event [Line Items] |  |  |
Applicable margin on variable interest rate |  |  | 0.25%
Revolving Credit Facility |  |  |
Subsequent Event [Line Items] |  |  |
Revolving credit facility, maximum borrowing capacity |  |  | $ 75.0
Revolving credit facility, additional optional increase to maximum borrowing capacity |  |  | $ 50.0
Revolving credit facility, extended maturity date |  |  | Jan. 18, 2018
Revolving Credit Facility | Letter of Credit |  |  |
Subsequent Event [Line Items] |  |  |
Revolving credit facility, maximum borrowing capacity |  |  | $ 15.0
Subsequent Event |  |  |
Subsequent Event [Line Items] |  |  |
Dividends payable, declared date | Jun. 10, 2015 |  |
Dividends payable, per share amount | $ 0.10 |  |
Dividends payable, payable date | Jul. 15, 2015 |  |
Dividends declared, record date | Jun. 25, 2015 |  |
Subsequent Event | Credit Facility |  |  |
Subsequent Event [Line Items] |  |  |
Value of common shares repurchases permitted and dividends paid for any fiscal year |  | $ 75.0 |
Value of common shares repurchases permitted, dividends paid and permitted acquisitions for any fiscal year |  | 125.0 |
Subsequent Event | Credit Facility | Cash, Cash Equivalents and Marketable Securities |  |  |
Subsequent Event [Line Items] |  |  |
Financial covenants amount |  | $ 50.0 |
Subsequent Event | Credit Facility | Minimum |  |  |
Subsequent Event [Line Items] |  |  |
Quarterly Commitment Fees on the Facility's unused commitments |  | 0.25% |
Subsequent Event | Credit Facility | Maximum |  |  |
Subsequent Event [Line Items] |  |  |
Quarterly Commitment Fees on the Facility's unused commitments |  | 0.40% |
Subsequent Event | Credit Facility | London Interbank Offered Rate (LIBOR) | Minimum |  |  |
Subsequent Event [Line Items] |  |  |
Applicable margin on variable interest rate |  | 0.875% |
Subsequent Event | Credit Facility | London Interbank Offered Rate (LIBOR) | Maximum |  |  |
Subsequent Event [Line Items] |  |  |
Applicable margin on variable interest rate |  | 1.75% |
Subsequent Event | Credit Facility | Base Rate Loans | Minimum |  |  |
Subsequent Event [Line Items] |  |  |
Applicable margin on variable interest rate |  | 0.00% |
Subsequent Event | Credit Facility | Base Rate Loans | Maximum |  |  |
Subsequent Event [Line Items] |  |  |
Applicable margin on variable interest rate |  | 0.75% |
Subsequent Event | Credit Facility | Revolving Credit Facility |  |  |
Subsequent Event [Line Items] |  |  |
Revolving credit facility, maximum borrowing capacity |  | $ 150.0 |
Revolving credit facility, additional optional increase to maximum borrowing capacity |  | $ 50.0 |
Revolving credit facility, extended maturity date |  | Jun. 03, 2020 |
Value of common shares repurchases permitted and dividends paid for any fiscal year |  | $ 75.0 |
Subsequent Event | Credit Facility | Revolving Credit Facility | Letter of Credit |  |  |
Subsequent Event [Line Items] |  |  |
Revolving credit facility, maximum borrowing capacity |  | $ 15.0 |

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- Definition The amount the Company must maintain of unrestricted cash and or marketable securities (excluding any marketable securities that are held in trust for the settlement of obligations under certain deferred compensation plans) as a condition of consummating permitted acquisitions, paying dividends to shareholders and repurchases of our common stock. + References No definition available. + Details
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- Definition The maximum amount the Company can spend in a fiscal year in dividends to stockholder, repurchased shares and permitted acquisitions according to the credit agreement. + References No definition available. + Details
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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
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