The number of additional shares acquired by the entity during the period.

No definition available.

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- Definition

The number of shares acquired by the entity during the period.

+ References

No definition available.

+ Details

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- Definition

Refers to voting interest acquired through payment of cash.

+ References

No definition available.

+ Details

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- Definition

Amount of accrued expenses and other liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date.

+ References

No definition available.

+ Details

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- Definition

Carrying amount as of the balance sheet date of the unpaid sum of the known and estimated amounts payable to satisfy all domestic and foreign income tax obligations due, assumed at the acquisition date.

+ References

No definition available.

+ Details

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- Definition

Amount of liabilities incurred for goods and services received that are used in an entity's business and related party payables, assumed at the acquisition date.

+ References

No definition available.

+ Details

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- Definition

Amount of receivable reflecting the cost incurred on uncompleted contracts in excess of related billing, assumed at the acquisition date.

+ References

No definition available.

+ Details

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- Definition

This element refers to costs to business combination and recognized earnings in excess of billings on uncompleted contracts, acquired at the acquisition date.

+ References

No definition available.

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- Definition

Carrying value as of the balance sheet date of obligations, excluding pension and other postretirement benefits, incurred through that date and payable for perquisites provided to employees pertaining to services received from them, assumed at the acquisition date.

+ References

No definition available.

+ Details

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- Definition

Amount of investments in debt and equity securities, including, but not limited to, held-to-maturity, trading and available-for-sale expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, which were acquired at the acquisition date.

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No definition available.

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- Definition

Amount of noncontrolling interest assumed at the acquisition date.

+ References

No definition available.

+ Details

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- Definition

Refers to the percentage of revenue generated from intangible assets.

+ References

No definition available.

+ Details

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- Definition

Refers to maximum measurement period to determine fair value of assets acquired and liabilities assumed.

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No definition available.

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- Definition

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

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ 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 (c)

-URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1392-128463

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- Definition

Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

This element represents the fair value of the noncontrolling interest in the acquiree at the acquisition date.

+ References

+ Details

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- Definition

Amount of assets acquired at the acquisition date.

+ References

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- Definition

Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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- Definition

Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date.

+ References

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- Definition

Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Period Type:	instant

- Definition

Amount of liabilities incurred for goods and services received that are used in an entity's business and related party payables, assumed at the acquisition date.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

- Definition

Amount of long-term debt due within one year or within the normal operating cycle, if longer, assumed at the acquisition date.

+ References

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Period Type:	instant

- Definition

Amount of deferred tax liability attributable to taxable temporary differences due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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+ Details

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- Definition

The amount of identifiable intangible assets recognized as of the acquisition date.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 55

-Paragraph 37

-URI http://asc.fasb.org/extlink&oid=35744172&loc=d3e2207-128464

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-Name Accounting Standards Codification

-Topic 805

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (c)

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Period Type:	instant

- Definition

The amount of inventory recognized as of the acquisition date.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 20

-Section 50

-Paragraph 1

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-Topic 805

-SubTopic 10

-Section 55

-Paragraph 37

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- Definition

Amount of liabilities assumed at the acquisition date.

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- Definition

Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

+ References

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Amount of long-term debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

+ References

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Amount of other liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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Amount recognized as of the acquisition date for the assets, including goodwill, in excess of (less than) the aggregate liabilities assumed, less the noncontrolling interest in the acquiree.

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- References

No definition available.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 20

-Section 50

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-Section 45

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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No definition available.

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BUSINESS COMBINATIONS, SCHUFF Acquisition (Details) - USD ($) $ / shares in Units, $ in Thousands		6 Months Ended
	May. 29, 2014	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Jun. 30, 2014
Business Acquisition [Line Items]
Measurement period of assets and liabilities		1 year
Business Combination, purchase price allocation [Abstract]
Goodwill		$ 29,649		$ 27,990
Schuff International, Inc [Member]
Business Acquisition [Line Items]
Number of shares acquired (in shares)			815,843
Additional number of shares acquired (in shares)	198,411	6,800
Percentage of ownership interest acquired (in hundredths)	65.00%		91.00%		70.00%
Business acquisition purchase price valued per share (in dollars per share)	$ 31.50
Percentage of ownership interest acquired through cash payments (in hundredths)	60.00%
Minority interest percentage by noncontrolling interest (in hundredths)	40.00%
Fair value of noncontrolling interest	$ 53,647	$ 100		3,400
Business Combination, purchase price allocation [Abstract]
Cash and cash equivalents	(627)
Investments	1,714
Accounts receivable	130,622
Costs and recognized earnings in excess of billings on uncompleted contracts	27,126
Prepaid expenses and other current assets	3,079
Inventories	14,487
Property and equipment, net	85,662
Goodwill	24,490	24,490		24,612
Other assets	2,947
Total assets acquired	293,978
Accounts payable	37,621
Accrued payroll and employee benefits	11,668
Accrued expenses and other current liabilities	12,532
Billings in excess of costs and recognized earnings on uncompleted contracts	65,985
Accrued income taxes	1,202
Accrued interest	76
Current portion of long-term debt	15,460
Long-term debt	4,375
Deferred tax liability	7,693
Other liabilities	604
Noncontrolling interest	4,365
Total liabilities assumed	161,581
Enterprise value	132,397
Less fair value of noncontrolling interest	53,647	$ 100		$ 3,400
Purchase price attributable to controlling interest	78,750
Schuff International, Inc [Member] \| Trade Names [Member]
Business Combination, purchase price allocation [Abstract]
Intangibles	$ 4,478
Percentage of revenue generated from intangible assets (in hundredths)	60.00%
Estimated useful life	15 years
Schuff International, Inc [Member] \| Common Stock [Member]
Business Acquisition [Line Items]
Number of shares acquired (in shares)	2,500,000