Subsequent Event	12 Months Ended
Dec. 31, 2016
Subsequent Events [Abstract]
SUBSEQUENT EVENT	SUBSEQUENT EVENTS Revolving Credit Facility and amended 2019 Term Loan On January 30, 2017, Cadence entered into a five-year senior unsecured revolving credit facility with a group of lenders led by JPMorgan Chase Bank, N.A., as administrative agent, which replaces the senior credit facility originally entered into on December 12, 2012 and as amended on September 19, 2014. The credit facility provides for borrowings up to $350.0 million, with the right to request increased capacity up to an additional $250.0 million upon the receipt of lender commitments, for total maximum borrowings of $600.0 million. The credit facility expires on January 28, 2022 and has no subsidiary guarantors. Any outstanding loans drawn under the credit facility are due at maturity on January 28, 2022. Outstanding borrowings may be paid at any time prior to maturity. Interest accrues on borrowings under the credit facility at either LIBOR plus a margin between 1.25% and 1.875% per annum or at the base rate plus a margin between 0.25% and 0.875% per annum. Interest is payable quarterly. A commitment fee ranging from 0.15% to 0.30% is assessed on the daily average undrawn portion of revolving commitments. The credit facility contains customary negative covenants that, among other things, restrict Cadence’s ability to incur additional indebtedness, grant liens and make certain investments, make acquisitions, dispose of certain assets and make certain restricted payments, including share repurchases and dividends. In addition, the credit facility contains financial covenants that require Cadence to maintain a leverage ratio not to exceed 3 to 1, and a minimum interest coverage ratio of 3 to 1. On January 30, 2017, Cadence also amended the agreement for its 2019 Term Loan. The amendment provides Cadence with additional flexibility under the covenants, consistent with the covenants in the credit agreement for its revolving credit facility. The other material terms of the 2019 Term Loan remain unchanged. Stock Repurchase Authorization In January 2017, Cadence’s Board of Directors authorized the repurchase of shares of Cadence’s common stock with a value of up to $525.0 million in the aggregate. The actual timing and amount of repurchases will be subject to business and market conditions, corporate and regulatory requirements, acquisition opportunities and other factors.

SUBSEQUENT EVENTS

Revolving Credit Facility and amended 2019 Term Loan

On January 30, 2017, Cadence entered into a five-year senior unsecured revolving credit facility with a group of lenders led by JPMorgan Chase Bank, N.A., as administrative agent, which replaces the senior credit facility originally entered into on December 12, 2012 and as amended on September 19, 2014. The credit facility provides for borrowings up to $350.0 million, with the right to request increased capacity up to an additional $250.0 million upon the receipt of lender commitments, for total maximum borrowings of $600.0 million. The credit facility expires on January 28, 2022 and has no subsidiary guarantors. Any outstanding loans drawn under the credit facility are due at maturity on January 28, 2022. Outstanding borrowings may be paid at any time prior to maturity.

Interest accrues on borrowings under the credit facility at either LIBOR plus a margin between 1.25% and 1.875% per annum or at the base rate plus a margin between 0.25% and 0.875% per annum. Interest is payable quarterly. A commitment fee ranging from 0.15% to 0.30% is assessed on the daily average undrawn portion of revolving commitments.

The credit facility contains customary negative covenants that, among other things, restrict Cadence’s ability to incur additional indebtedness, grant liens and make certain investments, make acquisitions, dispose of certain assets and make certain restricted payments, including share repurchases and dividends. In addition, the credit facility contains financial covenants that require Cadence to maintain a leverage ratio not to exceed 3 to 1, and a minimum interest coverage ratio of 3 to 1.

On January 30, 2017, Cadence also amended the agreement for its 2019 Term Loan. The amendment provides Cadence with additional flexibility under the covenants, consistent with the covenants in the credit agreement for its revolving credit facility. The other material terms of the 2019 Term Loan remain unchanged.

Stock Repurchase Authorization

In January 2017, Cadence’s Board of Directors authorized the repurchase of shares of Cadence’s common stock with a value of up to $525.0 million in the aggregate. The actual timing and amount of repurchases will be subject to business and market conditions, corporate and regulatory requirements, acquisition opportunities and other factors.