XML 26 R42.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Acquisitions (Pro Forma Income Statement) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2015 | Mar. 31, 2014
Business Acquisition, Pro Forma Earnings Per Share, Diluted | $ 0.41 us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted | $ 0.35 us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted
Pro Forma [Member] |  |
Net sales | $ 153,981 us-gaap_BusinessAcquisitionsProFormaRevenue / us-gaap_StatementScenarioAxis = us-gaap_ProFormaMember | $ 160,118 us-gaap_BusinessAcquisitionsProFormaRevenue / us-gaap_StatementScenarioAxis = us-gaap_ProFormaMember
Gross profit | 35,125 fstr_BusinessAcquisitionsProFormaGrossProfit / us-gaap_StatementScenarioAxis = us-gaap_ProFormaMember | 39,526 fstr_BusinessAcquisitionsProFormaGrossProfit / us-gaap_StatementScenarioAxis = us-gaap_ProFormaMember
Net income | $ 4,331 us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss / us-gaap_StatementScenarioAxis = us-gaap_ProFormaMember | $ 7,534 us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss / us-gaap_StatementScenarioAxis = us-gaap_ProFormaMember
Business Acquisition, Pro Forma Earnings Per Share, Diluted | $ 0.42 us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted / us-gaap_StatementScenarioAxis = us-gaap_ProFormaMember | $ 0.73 us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted / us-gaap_StatementScenarioAxis = us-gaap_ProFormaMember

X
- Definition The pro forma gross profit for a period as if the business combination or combinations had been completed at the beginning of the period. + References No definition available. + Details
Name: | fstr_BusinessAcquisitionsProFormaGrossProfit
Namespace Prefix: | fstr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
Name: | us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
Name: | us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
Name: | us-gaap_BusinessAcquisitionsProFormaRevenue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_StatementScenarioAxis=us-gaap_ProFormaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |