Beneficial owners, ownership percentage.

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Employee purchase price as percentage of trading value.

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Expiration date of employee stock purchase plan.

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Interval between employee stock purchases.

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Maximum fair market value of employee stock purchase.

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Percentage of eligible compensation allowed, per grant purchase.

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Stock repurchase program additional authorized amount.

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Stock repurchase program, cumulative purchase, amount.

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Weighted average shares outstanding, accretive.

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Weighted average shares outstanding, increase (decrease).

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Aggregate dividends paid during the period for each share of common stock outstanding.

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Aggregate dividends declared during the period for each share of common stock outstanding.

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Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

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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.

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No definition available.

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- Definition

Amount of cash outflow to satisfy an employee's income tax withholding obligation as part of a net-share settlement of a share-based award.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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Number of additional shares authorized for issuance under an established share-based compensation plan.

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No definition available.

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

For net-share settlement of share-based awards when the employer settles employees' income tax withholding obligations, this element represents the number of shares the employees use to repay the employer.

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No definition available.

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Number of shares of capital stock issued (purchased by employees) in connection with an employee stock ownership plan.

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Aggregate value of stock issued during the period as a result of employee stock ownership plan (ESOP).

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Amount of stock repurchase plan authorized.

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No definition available.

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Amount remaining of a stock repurchase plan authorized.

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Total cost of shares repurchased divided by the total number of shares repurchased.

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Number of shares that have been repurchased during the period and are being held in treasury.

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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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Shareholders' Equity (Details) - USD ($)											1 Months Ended			2 Months Ended	12 Months Ended
Shareholders' Equity (Details) - USD ($)	Dec. 22, 2017	Jun. 30, 2017	Dec. 22, 2016	Jun. 30, 2016	May 06, 2016	Dec. 28, 2015	Jun. 29, 2015	Dec. 10, 2014	Dec. 10, 2013	Dec. 20, 2012	May 05, 2016	Dec. 31, 2013	Dec. 31, 2012	Mar. 09, 2018	Dec. 29, 2017	Dec. 30, 2016	Jan. 01, 2016	Jan. 02, 2015	Jul. 30, 2002
Equity, Class of Treasury Stock [Line Items]
Shares available for future issuance															2,229,558
Stock repurchase authorized															$ 137,200,000				$ 5,000,000
Additional stock repurchase authorized															132,200,000
Amount available under repurchase plan															$ 3,100,000
Repurchase of common stock					1,500,000										748,000	2,100,000
Purchase price per share					$ 14.77										$ 15.11	$ 14.60
Total cost															$ 11,298,000	$ 30,065,000	$ 1,356,000
Cumulative purchases															$ 134,100,000
Weighted average shares outstanding					4.00%						11.00%
Weighted average shares outstanding accretive on an annualized basis					$ 0.04						$ 0.03
Dividend declared													$ 0.10		$ 0.30	$ 0.26	$ 0.20	$ 0.12
Annual cash dividend per share												$ 0.10	$ 0.10			$ 0.23
Dividend payment	$ 4,700,000	$ 4,600,000	$ 4,000,000	$ 4,000,000		$ 3,200,000	$ 3,100,000	$ 3,500,000	$ 3,100,000	$ 3,100,000					$ 9,288,000	$ 7,988,000	$ 6,266,000
Subsequent Event [Member]
Equity, Class of Treasury Stock [Line Items]
Amount available under repurchase plan														$ 2,200,000
Dividend declared														$ 0.34
Executive Team [Member] \| Subsequent Event [Member]
Equity, Class of Treasury Stock [Line Items]
Repurchase of common stock														53,000
Purchase price per share														$ 18.33
Total cost														$ 1,000,000
Chief Executive Officer [Member]
Equity, Class of Treasury Stock [Line Items]
Repurchase of common stock					697,000
Beneficial owners					11.80%
Chief Operating Officer [Member]
Equity, Class of Treasury Stock [Line Items]
Repurchase of common stock					732,000
Beneficial owners					4.90%
Chief Financial Officer [Member]
Equity, Class of Treasury Stock [Line Items]
Repurchase of common stock					73,000
Beneficial owners					0.90%
Cumulative [Member]
Equity, Class of Treasury Stock [Line Items]
Repurchase of common stock															26,900,000	26,200,000
Purchase price per share															$ 4.97	$ 4.69
Share Repurchase Plan [Member]
Equity, Class of Treasury Stock [Line Items]
Total cost															$ 11,300,000	$ 30,100,000
Share Repurchase Plan [Member] \| Director [Member] \| Subsequent Event [Member]
Equity, Class of Treasury Stock [Line Items]
Repurchase of common stock														53,000
Purchase price per share														$ 18.33
Total cost														$ 1,000,000
Share Repurchase Plan [Member] \| Executive Team [Member] \| Subsequent Event [Member]
Equity, Class of Treasury Stock [Line Items]
Repurchase of common stock														53,000
Purchase price per share														$ 18.33
Total cost														$ 1,000,000
Tax Withholding [Member]
Equity, Class of Treasury Stock [Line Items]
shares withheld and not issued															268,000	294,000
Cost of shares withheld and not issued															$ 4,400,000	$ 4,000,000
Tax Withholding [Member] \| Subsequent Event [Member]
Equity, Class of Treasury Stock [Line Items]
shares withheld and not issued														177,000
Cost of shares withheld and not issued														$ 3,100,000
Stock Option [Member]
Equity, Class of Treasury Stock [Line Items]
Percentage of eligible compensation allowed, per grant purchase															10.00%
Interval between employee stock purchases															6 months
Employee purchase price as percentage of trading value															95.00%
Aggregate fair market value of shares purchased by an employee															$ 25,000
Employee stock purchase plan, expiration date															Jul. 01, 2023
Total number of shares available for purchase under the plans															211,845
Shares issued under ESPP															67,761	67,111	48,356
Proceeds from ESPP															$ 1,000,000	$ 1,000,000	$ 700,000
Additional shares authorized															250,000
Shares available for future issuance															279,606