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Stock-Based Compensation (Details) $ / shares in Units, $ in Thousands | 1 Months Ended | 12 Months Ended
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Feb. 28, 2017 stock_awards | Feb. 29, 2016 stock_awards | Feb. 28, 2015 stock_awards | Dec. 31, 2017 USD ($) tranch $ / shares shares | Dec. 31, 2016 USD ($) $ / shares shares | Dec. 31, 2015 USD ($) $ / shares shares
Stock-Based Compensation [Abstract] |  |  |  |  |  |  |
Maximum number of shares approved for issuance under stock-based compensation plan |  |  |  |  | 3,700,000 |  |
Number of types of stock-based awards granted (in types) | stock_awards |  | 2 | 2 | 2 |  |  |
Number of shares available for future issuance under stock-based compensation plan |  |  |  |  | 2,700,000 |  |
Fair market value of PSUs and RSUs vested | $ |  |  |  |  | $ 8,500 | $ 2,800 | $ 4,900
Stock-based compensation expense | $ |  |  |  |  | 9,730 | 8,177 | 5,825
Tax benefit from compensation expense | $ |  |  |  |  | 2,500 | $ 3,100 | $ 2,200
Unrecognized compensation expense | $ |  |  |  |  | $ 10,700 |  |
Unrecognized Compensation, Period for Recognition |  |  |  |  | 1 year 8 months |  |
Stock-Based Compensation Awards [Abstract] |  |  |  |  |  |  |
Performance Shares Target Percentage Earned |  |  |  |  |  |  | 63.00%
Officer [Member] |  |  |  |  |  |  |
Stock-Based Compensation Awards [Abstract] |  |  |  |  |  |  |
Performance Shares that could be awarded, as a percentage of ROIC target amount, minimum |  |  |  |  | 0.00% |  |
Performance Shares that could be awarded, as a percentage of ROIC target amount, maximum |  |  |  |  | 200.00% |  |
Performance Shares Target Percentage Earned, officers |  |  |  |  |  | 97.00% |
Other employees [Member] |  |  |  |  |  |  |
Stock-Based Compensation Awards [Abstract] |  |  |  |  |  |  |
Performance Shares that could be awarded, as a percentage of target amount, minimum |  |  |  |  | 0.00% |  |
Performance Shares that could be awarded, as a percentage of target amount, maximum |  |  |  |  | 200.00% |  |
Performance Shares Target Percentage Earned |  |  |  |  |  | 104.00% |
Performance Shares [Member] |  |  |  |  |  |  |
Stock-Based Compensation [Abstract] |  |  |  |  |  |  |
Stock-based compensation expense | $ |  |  |  |  | $ 4,923 | $ 4,114 | $ 2,295
Stock-Based Compensation Awards [Abstract] |  |  |  |  |  |  |
PSUs forfeited during the period due to the full performance condition not being achieved |  |  |  |  | 8,457 |  |
Number of shares [Abstract] |  |  |  |  |  |  |
Outstanding, December 31, 2016 |  |  |  |  | 448,500 |  |
Granted |  |  |  |  | 178,021 | 418,344 | 116,636
Performance condition adjustment | [1] |  |  |  | 5,175 |  |
Vested |  |  |  |  | (118,138) |  |
Forfeited | [2] |  |  |  | (26,398) |  |
Outstanding, December 31, 2017 |  |  |  |  | 487,160 | 448,500 |
Weighted Average Grant Date Fair Value [Abstract] |  |  |  |  |  |  |
Outstanding, December 31, 2016 | $ / shares |  |  |  |  | $ 18.16 |  |
Granted | $ / shares |  |  |  |  | 27.05 | $ 16.56 | $ 36.17
Performance condition adjustment | $ / shares |  |  |  |  | 16.56 |  |
Vested | $ / shares |  |  |  |  | 20.44 |  |
Forfeited | $ / shares |  |  |  |  | 19.63 |  |
Outstanding, December 31, 2017 | $ / shares |  |  |  |  | $ 20.76 | $ 18.16 |
Performance Shares [Member] | Officer [Member] |  |  |  |  |  |  |
Stock-Based Compensation Awards [Abstract] |  |  |  |  |  |  |
Vesting period (in years) |  |  |  |  | 3 years |  |
Performance Shares [Member] | Other employees [Member] |  |  |  |  |  |  |
Stock-Based Compensation Awards [Abstract] |  |  |  |  |  |  |
Number of equal tranches for annual vesting (in tranches) | tranch |  |  |  |  | 3 |  |
Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |  |
Stock-Based Compensation [Abstract] |  |  |  |  |  |  |
Stock-based compensation expense | $ |  |  |  |  | $ 4,807 | $ 3,982 | $ 2,995
Number of shares [Abstract] |  |  |  |  |  |  |
Outstanding, December 31, 2016 |  |  |  |  | 387,287 |  |
Granted |  |  |  |  | 214,035 | 335,820 | 140,167
Vested |  |  |  |  | (182,489) |  |
Forfeited |  |  |  |  | (15,581) |  |
Outstanding, December 31, 2017 |  |  |  |  | 403,252 | 387,287 |
Weighted Average Grant Date Fair Value [Abstract] |  |  |  |  |  |  |
Outstanding, December 31, 2016 | $ / shares |  |  |  |  | $ 19.73 |  |
Granted | $ / shares |  |  |  |  | 27.10 | $ 16.73 | $ 36.16
Vested | $ / shares |  |  |  |  | 20.79 |  |
Forfeited | $ / shares |  |  |  |  | 22.41 |  |
Outstanding, December 31, 2017 | $ / shares |  |  |  |  | $ 23.06 | $ 19.73 |
Restricted Stock Units (RSUs) [Member] | Officers and other employees [Member] |  |  |  |  |  |  |
Stock-Based Compensation Awards [Abstract] |  |  |  |  |  |  |
Number of equal tranches for annual vesting (in tranches) | tranch |  |  |  |  | 3 |  |
Restricted Stock Units (RSUs) [Member] | Nonemployee Directors [Member] |  |  |  |  |  |  |
Stock-Based Compensation Awards [Abstract] |  |  |  |  |  |  |
Vesting period (in years) |  |  |  |  | 1 year |  |
Employee Stock Option [Member] |  |  |  |  |  |  |
Stock-Based Compensation [Abstract] |  |  |  |  |  |  |
Stock-based compensation expense | $ |  |  |  |  | $ 0 | $ 81 | $ 535
[1] | Amount represents additional PSU's earned during the year ended December 31, 2017, based on the performance condition adjustment, as other employees earned 104% of the target based Boise Cascade's 2016 EBITDA.
[2] | Total PSUs forfeited during the year ended December 31, 2017, includes 8,457 shares related to the performance condition adjustment, as officers earned 97% of the target based on Boise Cascade’s 2016 ROIC.

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- Definition The performance shares awarded to participants during the period as a percentage of the target based on the entity's EBITDA, determined in accordance with the grant agreement. + References No definition available. + Details
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- Definition The percentage of the target amount of performance shares percentage awarded, based on the entity's return on invested capital (ROIC), determined in accordance with the grant agreement. + References No definition available. + Details
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- Definition The maximum percentage of the target amount of performance shares that may be awarded, based on the entity's return on invested capital (ROIC), determined in accordance with the grant agreement. + References No definition available. + Details
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- Definition The weighted average fair value of non-vested performance true-up awards on equity-based plans excluding options plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. + References No definition available. + Details
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- Definition Unrecognized cost of unvested share-based compensation awards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition 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). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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