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The amount of the cost recognized during the period for defined contribution plans.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 70

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942

+ Details

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- Definition

Amount of discretionary contributions made by an employer to a defined contribution plan.

+ References

No definition available.

+ Details

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- Definition

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

+ References

No definition available.

+ Details

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- Definition

Percentage employer matches of the employee's percentage contribution matched.

+ References

No definition available.

+ Details

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Employee Benefit Plans (Matching Retirement/Savings Plan) (Details) (USD $)	12 Months Ended			6 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2012
Defined Contribution Pension and Other Postretirement Plans Disclosure [Line Items]
Employer matching contribution percentage	50.00%
Percentage of pay deferred by employee eligible for employer matching contributions	6.00%
Matching and discretionary contributions	$ 600,000	$ 500,000	$ 600,000
COB Matching Retirement/Savings Plan [Member]
Defined Contribution Pension and Other Postretirement Plans Disclosure [Line Items]
Employer matching contribution percentage	50.00%
Percentage of pay deferred by employee eligible for employer matching contributions	6.00%
Discretionary contributions	0	0	0
Matching and discretionary contributions	600,000	500,000	600,000
Tax-Qualified Profit-Sharing and Savings Retirement Plan [Member] \| Granite Corp. [Member]
Defined Contribution Pension and Other Postretirement Plans Disclosure [Line Items]
Employer matching contribution percentage				50.00%
Percentage of pay deferred by employee eligible for employer matching contributions				6.00%
Matching and discretionary contributions		$ 0