U.S. Concrete (USCR) 10-K 4 Mar 16 2015 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2015	Mar. 02, 2016	Jun. 30, 2015
Document and Entity Information [Abstract]
Entity Registrant Name	US CONCRETE INC
Entity Central Index Key	1,073,429
Current Fiscal Year End Dates	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Public Float			$ 508,425,677
Entity Common Stock, Shares Outstanding		15,194,236
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	FY
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2015

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 3,925	$ 30,202
Trade accounts receivable, net	171,256	114,902
Inventories	36,726	31,722
Deferred income taxes	0	1,887
Prepaid expenses	4,450	3,965
Other receivables	7,765	6,519
Assets held for sale	0	3,779
Other current assets	2,374	301
Total current assets	226,496	193,277
Property, plant and equipment, net	248,123	176,524
Goodwill	100,204	50,757
Intangible assets, net	95,754	31,720
Deferred income taxes	30,875	0
Other assets	11,450	8,250
Total assets	712,902	460,528
Current liabilities:
Accounts payable	80,419	48,705
Accrued liabilities	79,996	50,391
Current maturities of long-term debt	9,386	5,104
Derivative liabilities	67,401	25,246
Liabilities held for sale	0	902
Total current liabilities	237,202	130,348
Long-term debt, net of current maturities	272,363	215,333
Other long-term obligations and deferred credits	38,416	6,940
Deferred income taxes	0	6,427
Total liabilities	$ 547,981	$ 359,048
Commitments and contingencies (Note 22)
Equity:
Preferred stock, $0.001 par value per share (10,000 shares authorized; none issued)	$ 0	$ 0
Common stock, $0.001 par value per share (100,000 shares authorized; 15,713 and 14,675 shares issued, respectively; and 14,871 and 13,978 shares outstanding, respectively)	16	15
Additional paid-in capital	201,015	156,745
Accumulated deficit	(17,243)	(42,743)
Treasury stock, at cost (842 and 697 common shares, respectively)	(18,867)	(12,537)
Total equity	164,921	101,480
Total liabilities and equity	$ 712,902	$ 460,528

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, authorized (in shares)	10,000,000	10,000,000
Preferred stock, issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, authorized (in shares)	100,000,000	100,000,000
Common stock, issued (in shares)	15,713,000	14,675,000
Common stock, outstanding (in shares)	14,871,000	13,978,000
Treasury stock, at cost (in shares)	842,000	697,000

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Statement [Abstract]
Revenue	$ 974,717	$ 703,714	$ 598,155
Cost of goods sold before depreciation, depletion and amortization	768,839	573,318	498,660
Selling, general and administrative expenses	87,978	61,850	59,424
Depreciation, depletion and amortization	43,570	23,849	18,868
Loss on revaluation of contingent consideration, net	932	0	0
Gain on sale of assets, net	(468)	(625)	(232)
Income from operations	73,866	45,322	21,435
Interest expense, net	(21,734)	(20,431)	(11,332)
Derivative loss	(60,016)	(3,556)	(29,964)
Gain on early extinguishment of debt	0	11	985
Other income, net	3,569	2,385	1,771
(Loss) income from continuing operations before income taxes	(4,315)	23,731	(17,105)
Income tax (benefit) expense	(30,135)	2,156	1,168
Income (loss) from continuing operations	25,820	21,575	(18,273)
Loss from discontinued operations, net of taxes	(320)	(993)	(1,856)
Net income (loss)	$ 25,500	$ 20,582	$ (20,129)
Basic income (loss) per share:
Income (loss) from continuing operations (in dollars per share)	$ 1.83	$ 1.59	$ (1.42)
Loss from discontinued operations, net of income tax (in dollars per share)	(0.02)	(0.07)	(0.14)
Net income (loss) per share - basic (in dollars per share)	1.81	1.52	(1.56)
Diluted income (loss) per share:
Income (loss) from continuing operations (in dollars per share)	1.66	1.55	(1.42)
Loss from discontinued operations, net of taxes (in dollars per share)	(0.02)	(0.07)	(0.14)
Net income (loss) per share - diluted (in dollars per share)	$ 1.64	$ 1.48	$ (1.56)
Weighted average shares outstanding:
Basic (in shares)	14,080	13,541	12,917
Diluted (in shares)	15,560	13,898	12,917

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Deficit [Member]	Treasury Stock [Member]
Balance (in shares) at Dec. 31, 2012		13,358
Balance at Dec. 31, 2012	$ 92,524	$ 13	$ 136,451	$ (43,196)	$ (744)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	5,429		5,429
Restricted stock vesting (in shares)		183
Restricted stock vesting	0	$ 0	0
Restricted stock grants (in shares)		166
Restricted stock grants, net of cancellations	0	$ 0	0
Stock options exercised (in shares)		17
Stock options exercised	224	$ 0	224
Conversion of convertible debt (in shares)		608
Conversion of convertible debt	10,592	$ 1	10,591
Other treasury share purchases (in shares)		(296)
Other treasury share purchases	(4,913)				(4,913)
Net (loss) income	(20,129)			(20,129)
Balance (in shares) at Dec. 31, 2013		14,036
Balance at Dec. 31, 2013	83,727	$ 14	152,695	(63,325)	(5,657)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	3,655		3,655
Restricted stock vesting (in shares)		28
Restricted stock vesting	0	$ 0	0
Restricted stock grants (in shares)		169
Restricted stock grants, net of cancellations	1	$ 1	0
Stock options exercised (in shares)		27
Stock options exercised	0		377
Stock options exercised	377
Warrants exercised (in shares)		1
Warrants exercised	18	$ 0	18
Share repurchase program (in shares)		(200)
Share repurchase program	(4,824)	$ 0	0		(4,824)
Other treasury share purchases (in shares)		(83)
Other treasury share purchases	(2,056)				(2,056)
Net (loss) income	$ 20,582			20,582
Balance (in shares) at Dec. 31, 2014	13,978	13,978
Balance at Dec. 31, 2014	$ 101,480	$ 15	156,745	(42,743)	(12,537)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	5,824		5,824
Excess tax benefits from share-based compensation	4,952		4,952
Restricted stock vesting (in shares)		22
Restricted stock vesting	0	$ 0	0
Restricted stock grants (in shares)		200
Restricted stock grants, net of cancellations	$ 0	$ 0	0
Stock options exercised (in shares)	15	15
Stock options exercised		$ 0	315
Stock options exercised	$ 315
Warrants exercised (in shares)		359
Warrants exercised	18,091	$ 0	18,091
Other treasury share purchases (in shares)		(145)
Other treasury share purchases	(6,330)				(6,330)
Common stock issuance (in shares)		442
Common stock issuance	15,089	$ 1	15,088
Net (loss) income	$ 25,500
Balance (in shares) at Dec. 31, 2015	14,871	14,871
Balance at Dec. 31, 2015	$ 164,921	$ 16	$ 201,015	$ (17,243)	$ (18,867)

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ 25,500	$ 20,582	$ (20,129)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation, depletion and amortization	43,570	23,849	19,016
Debt issuance cost amortization	1,795	1,679	2,164
Gain on extinguishment of debt	0	(11)	(985)
Amortization of facility exit costs	0	0	(142)
Amortization of discount on long-term incentive plan and other accrued interest	427	425	512
Net loss on derivative	60,016	3,556	29,964
Net loss on revaluation of contingent consideration	932	0	0
Loss on impairment of long-lived assets	0	900	0
Net gain on sale of assets	(275)	(1,265)	(13)
Deferred income taxes	(37,428)	864	818
Deferred rent	0	0	510
Provision for doubtful accounts and customer disputes	4,198	1,533	1,103
Stock-based compensation	5,824	3,655	5,429
Changes in assets and liabilities, excluding effects of acquisitions:
Accounts receivable	(37,766)	(13,466)	(8,982)
Inventories	(383)	(2,534)	(2,574)
Prepaid expenses and other current assets	(1,094)	217	2,497
Other assets and liabilities, net	(1,341)	(380)	(2,732)
Accounts payable and accrued liabilities	40,286	11,311	(2,276)
Net cash provided by operating activities	104,261	50,915	24,180
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property, plant and equipment	(24,977)	(32,584)	(19,988)
Payments for acquisitions	(135,347)	(89,602)	(4,410)
Proceeds from disposals of property, plant and equipment	1,312	3,708	627
Proceeds from (payments for) disposals of business units	1,177	0	(2,333)
Net cash used in investing activities	(157,835)	(118,478)	(26,104)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from revolver borrowings	206,809	213	137,302
Repayments of revolver borrowings	(161,809)	(213)	(150,602)
Proceeds from debt issuance	0	0	200,000
Repayments of debt	(117)	0	(61,113)
Proceeds from exercise of stock options and warrants	546	396	224
Payments of other long-term obligations	(2,298)	(2,250)	0
Payments for other financing	(8,611)	(5,194)	(1,995)
Debt issuance costs	(893)	(974)	(9,063)
Payments for share repurchases	0	(4,824)	0
Other treasury share purchases	(6,330)	(2,056)	(4,913)
Net cash provided by (used in) financing activities	27,297	(14,902)	109,840
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(26,277)	(82,465)	107,916
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	30,202	112,667	4,751
CASH AND CASH EQUIVALENTS AT END OF PERIOD	3,925	30,202	112,667
Supplemental Disclosure of Cash Flow Information:
Cash paid for interest	19,503	18,636	7,324
Cash paid for income taxes	1,949	1,464	305
Supplemental Disclosure of Non-cash Investing and Financing Activities:
Conversion of convertible debt to equity	0	0	6,381
Capital expenditures funded by capital leases and promissory notes	23,450	11,161	11,891
Acquisitions funded by stock issuance, contingent consideration and deferred payments	50,805	0	0
Disposition funded through promissory note and deferred payments	$ 3,380	$ 0	$ 0

ORGANIZATION AND SUMMARY OF SIG

ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Nature of Operations U.S. Concrete, Inc., a Delaware corporation, provides ready-mixed concrete, aggregates and concrete-related products and services to the construction industry in several major markets in the United States. U.S. Concrete, Inc. is a holding company and conducts its businesses through its consolidated subsidiaries. In these notes to the consolidated financial statements (these "Notes"), we refer to U.S. Concrete, Inc. and its subsidiaries as "we," "us," the "Company," or "U.S. Concrete" unless we specifically state otherwise or the context indicates otherwise. Basis of Presentation The consolidated financial statements consist of the accounts of U.S. Concrete, Inc. and its wholly owned subsidiaries. All significant intercompany account balances and transactions have been eliminated. During 2015, we completed eight acquisitions consisting of 22 standard ready-mixed concrete plants, five quarries (one of which we have operated under a lease agreement since October 2014), and related assets and liabilities (see Note 2). All of the assets acquired and liabilities assumed were recorded at their respective fair value as of the date of the acquisition, and the results of operations are included in the consolidated financial statements from the respective date of acquisition. On June 2, 2015, we completed the sale of our one remaining precast operation in Pennsylvania. This sale represented the final divestiture of the Company's owned assets related to precast operations, which were classified as held for sale as of December 31, 2014. The results of operations for this unit have been included in discontinued operations for the periods presented. During 2014, we completed nine acquisitions consisting of seven standard ready-mixed concrete plants and related assets, 16 volumetric ready-mixed concrete facilities, 109 volumetric ready-mixed concrete trucks and related assets, and leases to operate two aggregate distribution terminals in New York and related assets and liabilities (see Note 2). All of the assets acquired and liabilities assumed were recorded at their respective fair value as of the date of the acquisition, and the results of operations are included in the consolidated financial statements from the respective date of acquisition. On July 26, 2013, we acquired three ready-mixed concrete plants and related assets in our north Texas market from Bodin Concrete, L.P. All of the assets acquired were recorded at their respective fair value as of the date of the acquisition, and the results of operations are included in the consolidated financial statements from the date of acquisition. Business Combinations We have acquired a number of businesses in recent years. We record the operating results of our acquired businesses in our consolidated statements of operations from the date of acquisition. Acquisitions are accounted for using the purchase method of accounting in accordance with Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") 805 "Business Combinations." We allocate the purchase price to the assets acquired, including identifiable intangible assets, liabilities assumed, and contingent consideration obligations based on their estimated fair value on the date of the acquisition. These allocations require the significant use of estimates and are based on information that was available to management at the time these consolidated financial statements were prepared. We utilized recognized valuation techniques, including the income approach, sales approach, and cost approach to value the net assets acquired. The excess of the purchase price over the fair value of the net assets acquired is recorded as goodwill. Final valuations of assets and liabilities are obtained and recorded within one year from the date of the acquisition. See Note 13 for additional information regarding valuation of contingent consideration. Assets and Liabilities Held for Sale We classify long-lived assets (disposal groups) to be sold as held for sale in the period in which all of the following criteria are met: management, having the authority to approve the action, commits to a plan to sell the asset (disposal group); the asset (disposal group) is available for immediate sale in its present condition subject only to terms that are usual and customary for sales of such assets (disposal groups); an active program to locate a buyer and other actions required to complete the plan to sell the asset (disposal group) have been initiated; the sale of the asset (disposal group) is probable, and transfer of the asset (disposal group) is expected to qualify for recognition as a completed sale within one year, except if events or circumstances beyond our control extend the period of time required to sell the asset (disposal group) beyond one year; the asset (disposal group) is being actively marketed for sale at a price that is reasonable in relation to its current fair value; and actions required to complete the plan indicate that it is unlikely that significant changes to the plan will be made or that the plan will be withdrawn. We initially measure a long-lived asset (disposal group) that is classified as held for sale at the lower of its carrying value or fair value less any costs to sell. Any loss resulting from this measurement is recognized in the period in which the held-for-sale criteria are met. Conversely, gains are not recognized on the sale of a long-lived asset (disposal group) until the date of sale. We assess the fair value of a long-lived asset (disposal group) less any costs to sell each reporting period it remains classified as held for sale and report any subsequent changes as an adjustment to the carrying value of the asset (disposal group), as long as the new carrying value does not exceed the carrying value of the asset at the time it was initially classified as held for sale. Upon determining that a long-lived asset meets the criteria to be classified as held for sale, we report the assets and liabilities of the disposal group, if material, in the line items assets held for sale and liabilities held for sale, respectively, in our consolidated balance sheets. Cash and Cash Equivalents We record as cash equivalents all highly liquid investments having maturities of three months or less at the original date of purchase. Our cash equivalents may include money market accounts, certificates of deposit and commercial paper of highly rated corporate or government issuers. We classify our cash equivalents as held-to-maturity. Cash equivalents are stated at cost plus accrued interest, which approximates market value. The maximum amount placed in any one financial institution is limited in order to reduce risk. At times, our investments may be in excess of amounts insured by the Federal Deposit Insurance Corporation. We have not experienced any losses on these accounts. Cash held as collateral or escrowed for contingent liabilities is included in other current and noncurrent assets based on the expected release date of the underlying obligation. Accounts Receivable Accounts receivables are reported net of allowance for doubtful accounts and customer disputes. We maintain an allowance for accounts receivable that we believe may not be collected in full. A provision for bad debt expense recorded to selling, general and administrative expenses increases the allowance. A provision for customer disputes recorded as a reduction to revenue also increases the allowance. Accounts receivable are written off when we determine the receivable will not be collected. Accounts receivable that we write off our books decrease the allowance. We determine the amount of bad debt expense and customer dispute losses we record each period and the resulting adequacy of the allowance at the end of each period by using a combination of historical loss experience, a customer-by-customer analysis of our accounts receivable balances each period, and subjective assessments of our loss exposure. Inventories Inventories consist primarily of cement and other raw materials, aggregates at our pits and quarries, and building materials that we hold for sale or use in the ordinary course of business. Inventories are stated at the lower of cost or fair market value using the average cost and first-in, first-out methods. We reduce the carrying value of our inventories for estimated excess and obsolete inventories equal to the difference between the cost of inventory and its estimated realizable value based upon assumptions about future product demand and market conditions. Once the new cost basis is established, the value is not increased with any changes in circumstances that would indicate an increase after the remeasurement. If actual product demand or market conditions are less favorable than those projected by management, inventory write-downs may be required that could result in a material change to our consolidated results of operations or financial position. Prepaid Expenses Prepaid expenses primarily include amounts we have paid for insurance, licenses, taxes, rent, and maintenance contracts. We expense or amortize all prepaid amounts as used or over the period of benefit, as applicable. Property, Plant and Equipment, Net We state property, plant and equipment at cost and use the straight-line method to compute depreciation of these assets other than mineral deposits over the following estimated useful lives: buildings and land improvements, from 10 to 40 years; machinery and equipment, from 10 to 30 years; mixers, trucks and other vehicles, from one to 12 years; and other, from three to 10 years. We capitalize leasehold improvements on properties held under operating leases and amortize those costs over the lesser of their estimated useful lives or the applicable lease term. We compute depletion of mineral deposits as such deposits are extracted utilizing the unit-of-production method. We expense maintenance and repair costs when incurred and capitalize and depreciate expenditures for major renewals and betterments that extend the useful lives of our existing assets. When we retire or dispose of property, plant or equipment, we remove the related cost and accumulated depreciation from our accounts and reflect any resulting gain or loss in our consolidated statements of operations. Impairment of Long-lived assets We evaluate the recoverability of our long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets is measured by comparing the carrying amount of an asset to future undiscounted net cash flows expected to be generated by the asset. Such evaluations for impairment are significantly impacted by estimates of future prices for our products, capital needs, economic trends in the applicable construction sector and other factors. If we consider such assets to be impaired, the impairment we recognize is measured by the amount by which the carrying amount of the assets exceeds their fair value. Assets to be disposed of by sale are reflected at the lower of their carrying amounts, or fair values, less cost to sell. We test for impairment using a multi-tiered approach that incorporates an equal weighting to a multiple of earnings and an equal weighting to undiscounted estimated future cash flows. Intangible Assets Including Goodwill We amortize identifiable intangible assets with finite lives over their estimated useful lives using a straight-line approach. We record as goodwill the amount by which the total purchase price we have paid for acquisitions exceeds our estimated fair value of the net tangible and identifiable intangible assets acquired. We do not amortize goodwill but instead evaluate it for impairment within the reporting unit on an annual basis, or more often if events or circumstances indicate that there may be impairment. We generally test for intangible asset impairment in the fourth quarter of each year, because this period gives us the best visibility of the reporting units’ operating performances for the current year (seasonally, April through October are our highest revenue and production months), and our outlook for the upcoming year, since much of our customer base is finalizing operating and capital budgets during the fourth quarter. The impairment test we use involves estimating the fair value of our reporting units and comparing the result to the reporting unit's carrying value. We estimate fair value using an equally weighted combination of discounted cash flows and multiples of invested capital to EBITDA. The discounted cash flow model includes forecasts for revenue and cash flows discounted at our weighted average cost of capital. Multiples of invested capital to EBITDA are calculated using a weighted average of two selected 12 month periods results by reporting unit compared to the enterprise value of the Company, which is determined based on the combination of the market value of our capital stock and total outstanding debt. If the fair value exceeds the carrying value, the second step is not performed and no impairment is recorded. If however, the fair value is below the carrying value, a second step is performed to calculate the amount of the impairment by measuring the goodwill at an implied fair value. See Note 4 for further discussion of our goodwill and purchased intangible assets. Debt Issue Costs We amortize debt issue costs related to our $250.0 million asset-based revolving credit facility (the "Revolving Facility"), our 8.5% Senior Secured Notes due 2018 (the "2018 Notes"), and our 9.5% Convertible Secured Notes due 2015 (the "Convertible Notes") as interest expense over the scheduled maturity period of the debt. Unamortized debt issuance costs were $6.1 million and $6.8 million as of December 31, 2015 and 2014 , respectively. We include unamortized debt issuance costs in other assets. See Note 9 for additional information regarding our debt, and Note 10 regarding our extinguishment of debt during 2013. Revenue and Expenses We derive substantially all of our revenue from the production and delivery of ready-mixed concrete, aggregates, and related building materials. We recognize revenue, net of sales tax, when products are delivered, selling price is fixed or determinable, persuasive evidence of an arrangement exists, and collection is reasonably assured. Amounts billed to customers for delivery costs are classified as a component of total revenues and the related delivery costs (excluding depreciation) are classified as a component of total cost of goods sold. Cost of goods sold consists primarily of product costs and operating expenses (excluding depreciation, depletion and amortization). Operating expenses consist primarily of wages, benefits, insurance and other expenses attributable to plant operations, repairs and maintenance, and delivery costs. Selling expenses consist primarily of sales commissions, salaries of sales managers, travel and entertainment expenses, and trade show expenses. General and administrative expenses consist primarily of executive and administrative compensation and benefits, office rent, utilities, communication and technology expenses, provision for doubtful accounts, and legal and professional fees. Deferred Rent We recognize escalating lease payments on a straight-line basis over the term of each respective lease with the difference between cash payment and rent expense recognized being recorded as deferred rent in accrued liabilities in the accompanying consolidated balance sheets. Insurance Programs We maintain third-party insurance coverage against certain risks. Under our insurance programs, we share the risk of loss with our insurance underwriters by maintaining high deductibles subject to aggregate annual loss limitations. In connection with these automobile, general liability and workers’ compensation insurance programs, we have entered into standby letters of credit agreements totaling $11.3 million as of both December 31, 2015 and 2014 . We fund our deductibles and record an expense for losses we expect under the programs. We determine expected losses using a combination of our historical loss experience and subjective assessments of our future loss exposure. The estimated losses are subject to uncertainty from various sources, including changes in claim reporting patterns, claim settlement patterns, judicial decisions, legislation and economic conditions. The amounts accrued for self-insured claims were $12.0 million and $9.5 million as of December 31, 2015 and 2014 , respectively. We include these accruals in accrued liabilities on our consolidated balance sheets. Income Taxes In accordance with ASC 740 - Income Taxes , we use the liability method of accounting for income taxes. Under this method, we record deferred income taxes based on temporary differences between the financial reporting and tax bases of assets and liabilities and use enacted tax rates and laws that we expect will be in effect when we recover those assets or settle those liabilities, as the case may be, to measure those taxes. We record a valuation allowance to reduce the deferred tax assets to the amount that is more likely than not to be realized. We have a valuation allowance of $4.1 million and $34.9 million as of December 31, 2015 and 2014 , respectively. In previous years, we netted our uncertain tax positions against our net operating loss carryforwards in accordance with FASB guidelines. As a result of the utilization of those loss carryforwards, we now present the uncertain tax benefits in other long-term obligations and deferred credits on our consolidated balance sheets. Contingent Consideration We record an estimate of the fair value of contingent consideration within accrued liabilities and other long-term obligations on our consolidated balance sheets. On a quarterly basis, we revalue the liability and record increases or decreases in the fair value as an adjustment to earnings. Changes to the contingent consideration liability can result from adjustments to the discount rate, accretion of interest expense due to the passage of time, or changes in the assumptions regarding probabilities of successful achievement of related milestones and the estimated timing in which the milestones are achieved. The assumptions used in estimating fair value require significant judgment. The use of different assumptions and judgments could result in a materially different estimate of fair value. For further information, see Note 13 regarding our fair value disclosures. Fair Value of Financial Instruments Our financial instruments consist of cash and cash equivalents, trade receivables, trade payables, long-term debt, other long-term obligations, and derivative liabilities. We consider the carrying values of cash and cash equivalents, trade receivables and trade payables to be representative of their respective fair values because of their short-term maturities or expected settlement dates. The fair value of our 2018 Notes, estimated based on broker / dealer quoted market prices, was $207.0 million and $209.0 million as of December 31, 2015 and 2014, respectively. The carrying value of outstanding amounts under our Revolving Facility approximates fair value due to the floating interest rate. Our Convertible Notes were repaid on August 31, 2015 and had no fair value as of December 31, 2015 . The fair value of the Convertible Notes was $0.1 million at December 31, 2014 , with no embedded derivative. The fair value of issued Warrants (as defined herein) was $67.4 million and $25.2 million at December 31, 2015 and 2014 , respectively. The fair value of our contingent consideration obligations associated with acquisitions was $30.1 million at December 31, 2015 and $5.3 million at December 31, 2014 . For further information, see Note 11 regarding our derivative liabilities, Note 12 regarding our other long-term obligations, and Note 13 regarding our fair value disclosures. Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America ("U.S. GAAP") requires the use of estimates and assumptions by management in determining the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Estimates and assumptions that we consider significant in the preparation of our financial statements include those related to our allowance for doubtful accounts, goodwill, intangibles, valuation of derivatives, valuation of contingent consideration, accruals for self-insurance, income taxes, the valuation of inventory and the valuation and useful lives of property, plant and equipment. Stripping Costs We include post-production stripping costs in the cost of inventory produced during the period as these costs are incurred. Post-production stripping costs represent stripping costs incurred after the first salable minerals are extracted from the mine. Earnings (Loss) Per Share Basic earnings (loss) per share is computed by dividing net income (loss) by the weighted average number of common shares outstanding during the period. Diluted earnings (loss) per share is computed by dividing net income (loss) by the weighted average number of common shares outstanding during the period after giving effect to all potentially dilutive securities outstanding during the period. See Note 18 for additional information regarding our earnings (loss) per share. Comprehensive Income (Loss) Comprehensive income (loss) represents all changes in equity of an entity during the reporting period, except those resulting from investments by and distributions to stockholders. For the years ended December 31, 2015 , 2014 and 2013 , no differences existed between our consolidated net income (loss) and our consolidated comprehensive income (loss). Stock-based Compensation Stock-based employee compensation cost is measured at the grant date based on the calculated fair value of the award. We recognize expense over the employee’s requisite service period, generally the vesting period of the award, or in the case of performance-based awards, over the life of the derived service period. The related excess tax benefit received upon exercise of stock options or vesting of restricted stock, if any, is reflected in the statement of cash flows as a financing activity rather than an operating activity. See Note 17 for additional information regarding our stock-based compensation plans. Recent Accounting Pronouncements In November 2015, the FASB issued an amendment which simplifies the presentation of deferred income taxes. The amendment requires that deferred tax assets and liabilities be classified as non-current in the balance sheet. The new guidance is effective for annual periods beginning after December 15, 2016, and interim periods within those annual periods, with early adoption permitted. We early adopted the provisions of this new standard effective with the annual period ended December 31, 2015 on a prospective basis. Adoption of this new standard resulted in a reclassification of our net current deferred tax asset to net non-current deferred tax asset in our consolidated balance sheets. No prior periods were retrospectively adjusted. In September 2015, the FASB issued an amendment on measurement period adjustments related to business combinations. The new guidance requires that the cumulative impact of a measurement period adjustment, including the impact on prior periods, be recognized in the reporting period in which the adjustment is identified. Entities should apply the new guidance prospectively to measurement period adjustments that occur after the effective date. The amendment is effective for interim and annual periods beginning after December 15, 2015, with early adoption permitted. We early adopted the provisions of this new standard effective with the interim period ended September 30, 2015. Accordingly, we applied the amendment prospectively, and it did not result in any material impact on our consolidated financial statements or results of operations. In April 2015, the FASB issued an amendment related to debt issuance costs. The amendment requires that all costs incurred to issue debt be presented in the balance sheet as a direct reduction from the carrying value of the debt, similar to the presentation of debt discounts. Entities should apply the new guidance on a retrospective basis, wherein the balance sheet of each individual period presented should be adjusted to reflect the period-specific effects of applying the new guidance. In August 2015, the FASB issued a second amendment related to debt issuance costs clarifying that debt issuance costs related to line-of-credit arrangements could continue to be presented as an asset and be subsequently amortized over the term of the line-of-credit arrangement, regardless of whether there are any outstanding borrowings on the arrangement. The amendment is effective for annual periods beginning after December 15, 2015 and interim periods within those annual periods, with early adoption permitted. We do not expect the adoption of this amendment in fiscal year 2016 to have a material impact on our consolidated financial statements and results of operations. In May 2014, the FASB issued an amendment related to revenue recognition. The new guidance sets forth a new five step revenue recognition model which replaces the prior revenue recognition guidance in its entirety and is intended to eliminate numerous industry-specific pieces of revenue recognition guidance that have historically existed under U.S. GAAP. The underlying principle of the new amendment is that a business or other organization will recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects what it ultimately expects to receive in exchange for the goods or services. The amendment also requires more detailed disclosures and provides additional guidance for transactions that were not addressed completely in the prior accounting guidance. In August 2015, the FASB issued a second amendment related to revenue recognition to delay the effective date of the new revenue recognition guidance by one year. The amendment is effective for annual periods beginning after December 15, 2017 and interim periods within those periods. Early adoption will be permitted for annual periods beginning after December 15, 2016 and interim periods within those periods. We are currently evaluating the impact that this standard will have on our consolidated financial statements and results of operations. In April 2014, the FASB issued an amendment on reporting discontinued operations and disclosures of disposals of components of an entity. Specifically, the amendment revises the definition of a discontinued operation, expands disclosure requirements for transactions that meet the definition of a discontinued operation and requires entities to disclose additional information about individually significant components that are disposed of or held for sale and do not qualify as discontinued operations. Additionally, entities will be required to reclassify assets and liabilities of a discontinued operation for all comparative periods presented in the statement of financial position and to separately present certain information related to the operating and investing cash flows of the discontinued operation, for all comparative periods, in the statement of cash flows. The amendment is effective for annual and interim periods beginning after December 15, 2014 and is to be adopted on a prospective basis for all disposals (except disposals classified as held for sale prior to the adoption date) or components initially classified as held for sale in periods beginning on or after the adoption date. We adopted this guidance effective January 1, 2015, and there was no material impact on our consolidated financial statements or results of operations.

ACQUISITIONS AND DISPOSITIONS

ACQUISITIONS AND DISPOSITIONS	12 Months Ended
	Dec. 31, 2015
Business Combinations [Abstract]
ACQUISITIONS AND DISPOSITIONS	ACQUISITIONS AND DISPOSITIONS 2015 Acquisitions On February 23, 2015 , we acquired the equity of Right Away Redy Mix, Inc. ("Right Away"), located in Oakland, California. The purchase price was $18.0 million in cash, plus closing adjustments of $0.8 million , final working capital adjustments of $1.1 million , and potential future earn-out payments of up to $6.0 million based on the achievement of certain defined annual volume thresholds over a six -year period (the "Right Away Earn-out"). We funded the purchase with cash on hand. The acquisition included four ready-mixed concrete facilities, 49 mixer trucks and a fleet of transfer trucks used to transport cement and aggregates. The acquisition expands our business in our existing northern California market. The fair value of the assets acquired and liabilities assumed in the Right Away acquisition is preliminary and remains subject to adjustments, including, but not limited to, adjustments related to determination of the conclusion of tax attributes as of the acquisition date and the fair value of identifiable intangible assets and the Right Away Earn-out. On April 1, 2015 , we acquired the equity of Ferrara Bros. Building Materials Corp. ("Ferrara Bros."), located in New York, New York. We acquired the equity of Ferrara Bros. for $45.0 million in cash, approximately 442,000 shares of our common stock, calculated in accordance with the terms of the share purchase agreement ("SPA"), and valued at approximately $15.1 million on the date of issuance, less final working capital adjustments of $0.9 million , plus potential incentive awards in the form of equity of up to $35.0 million based on the achievement of certain EBITDA thresholds, as defined in the SPA, over a four -year period beginning in 2017 ("Ferrara Bros. Contingent Consideration"). We funded the purchase through a combination of cash on hand and borrowings under our Revolving Facility. Ferrara Bros. operates six ready-mixed concrete plants at its four facilities in New York and New Jersey and a fleet of 89 mixer trucks. The acquisition expands our presence in the New York metropolitan market and allows us to more effectively serve construction projects in Manhattan. The fair value of the assets acquired and liabilities assumed in the Ferrara Bros. acquisition is preliminary and remains subject to adjustments, including, but not limited to, adjustments related to the fair value of the Ferrara Bros. Contingent Consideration and identifiable intangible assets. On May 21, 2015 , we acquired the equity of Colonial Concrete Co. ("Colonial"), located in Newark, New Jersey. The purchase price was $15.0 million in cash, plus closing adjustments of $0.2 million . We funded the purchase through a combination of cash on hand and borrowings under our Revolving Facility. The acquisition included four ready-mixed concrete plants at three locations and a fleet of approximately 40 mixer trucks. The acquisition expanded our business in the New York metropolitan and northern New Jersey markets. The fair value of the assets acquired and liabilities assumed in the Colonial acquisition is preliminary and remains subject to adjustments, including, but not limited to, adjustments related to working capital, certain accrued liabilities, and the fair value of identifiable intangible assets. On May 29, 2015 , we acquired the assets of DuBrook Concrete, Inc. ("DuBrook"), located in Chantilly, Virginia, part of the greater Washington, D.C. metropolitan area. The purchase price was $11.5 million in cash, plus potential future earn-out payments based on volumes sold over a four -year period (the "DuBrook Earn-out"). The DuBrook Earn-out payments are not capped; however, we do not expect total payments to be in excess of $1.0 million . We funded the purchase through a combination of cash on hand and borrowings under our Revolving Facility. The acquisition included three ready-mixed concrete plants and a fleet of 42 mixer trucks. The purchase of these assets expanded our existing business in the Washington, D.C. metropolitan area. The fair value of the assets acquired and liabilities assumed in the DuBrook acquisition is preliminary and remains subject to adjustments, including, but not limited to, adjustments related to working capital and the fair value of identifiable intangible assets and the DuBrook Earn-out. On September 24, 2015 , we acquired the Wantage Stone (“Wantage”) reserves, a site development quarry including an 80 acre quarry along with mining rights to an additional 77 acres of land located in Hamburg, New Jersey, from Bicsak Brothers Realty, LLC and Wantage Stone, LLC. We have operated the Wantage quarry under a lease agreement since October 2014. The purchase price was $15.2 million in cash, plus deferred payments of $3.0 million payable over a three -year period. We funded the purchase through a combination of cash on hand and borrowings under our Revolving Facility. This acquisition expanded our aggregates operations in our New York and New Jersey markets. The fair value of the assets acquired and liabilities assumed in the Wantage acquisition is preliminary and remains subject to adjustments, including, but not limited to, adjustments related to the fair value of identifiable intangible assets and property, plant and equipment. On October 27, 2015 , we acquired the equity of Heavy Materials, LLC ("Heavy"), a vertically integrated ready-mixed concrete producer located in the U.S. Virgin Islands. The purchase price was $21.7 million in cash, less purchase adjustments of $0.8 million , plus deferred payments of $5.0 million , which will be paid over a two year period. We funded the purchase through a combination of cash on hand and borrowings on our Revolving Facility. Heavy operates four ready-mixed concrete plants, a fleet of 32 mixer trucks, and two quarries. Heavy also leases an industrial waterfront property that it utilizes as a marine terminal and sales yard. This acquisition expands our ready-mixed concrete and aggregates operations into new markets in the Caribbean islands. The fair value of the assets acquired and liabilities assumed in the Heavy acquisition is preliminary and remains subject to adjustments, including, but not limited to, adjustments related to working capital and the fair value of identifiable intangible assets and property, plant and equipment. During the year ended December 31, 2015 , we also completed two other individually immaterial acquisitions comprised of two sand and gravel operations near Vernon, Texas and Waurika, Oklahoma and one ready-mixed concrete operation in the U.S. Virgin Islands. The aggregate consideration paid consisted of $12.9 million in cash and $1.9 million in deferred payments payable within ten years. We funded these purchases through a combination of cash on hand and borrowings under our Revolving Facility. The acquisition of these assets expanded our business in our existing west Texas market and in the Caribbean market. The purchase price allocation for these two acquisitions is preliminary and remains subject to adjustments, including, but not limited to, the fair value of identifiable intangible assets and property, plant and equipment. We have made changes to the preliminary purchase price allocations for the 2015 acquisitions during the year ended December 31, 2015 primarily related to (i) fair value estimates of assets acquired and liabilities assumed for Right Away, Ferrara Bros., Colonial, DuBrook, and Wantage, (ii) working capital adjustments for Right Away, Ferrara Bros., and DuBrook, (iii) valuation of the Right Away Earn-out, Ferrara Bros. Contingent Consideration and DuBrook Earn-out, and (iv) valuation of identifiable intangible assets for the Right Away, Ferrara Bros., Colonial, and DuBrook acquisitions. The following table summarizes the total consideration for the 2015 acquisitions and presents the allocation of these amounts to the net tangible and intangible assets acquired and liabilities assumed based on the estimated fair values as of the respective acquisition date (in thousands). 2015 Acquisitions Right Away (1) Ferrara Bros. (2)(3) Colonial (2) DuBrook (2)(4) Wantage (2)(5) Heavy (2)(6) All Other (7) Cash $ 928 $ 67 $ 888 $ — $ — $ 20 $ — Accounts receivable 1,832 13,224 4,305 1,218 — 975 — Inventory 348 1,434 378 349 — 1,449 668 Other current assets 196 608 126 739 — 92 — Property, plant and equipment 9,696 13,147 6,325 2,394 12,694 6,095 5,153 Definite-lived intangible assets 7,036 50,310 4,640 4,473 — — — Other long-term assets — — 153 — — 47 — Total assets acquired $ 20,036 $ 78,790 $ 16,815 $ 9,173 $ 12,694 $ 8,678 $ 5,821 Current liabilities 1,399 6,944 5,299 910 — 3,269 91 Long-term deferred income tax 5,929 — — — — — — Other long-term liabilities — — — 59 — — — Total liabilities assumed $ 7,328 $ 6,944 $ 5,299 $ 969 $ — $ 3,269 $ 91 Goodwill 11,086 6,916 3,680 3,887 5,301 $ 20,243 8,933 Total consideration $ 23,794 $ 78,762 $ 15,196 $ 12,091 $ 17,995 $ 25,652 $ 14,663 (1) The purchase price allocation for the Right Away acquisition is subject to change pending determination of the conclusion of tax attributes as of the acquisition date and the fair value of identifiable intangible assets and the Right Away Earn-out. The fair value of the Right Away acquired accounts receivable is $1.8 million , with a gross contractual amount of $2.2 million . We do not expect to collect $0.4 million of the Right Away acquired accounts receivable. Total consideration for the Right Away acquisition includes $19.9 million of cash and $3.9 million for the fair value of the Right Away Earn-out as of the acquisition date. (2) The purchase price allocations for the Ferrara Bros., Colonial, DuBrook, Wantage, and Heavy acquisitions are preliminary and remain subject to adjustments, including, but not limited to, adjustments related to working capital, the fair value of the Ferrara Bros. Contingent Consideration, identifiable intangible assets, property, plant and equipment, and certain accrued liabilities. The fair value of the DuBrook and Colonial acquired accounts receivable approximate the gross contractual amounts as of the respective acquisition dates. The fair value of the Ferrara Bros. acquired accounts receivable is $13.2 million , with a gross contractual amount of $14.3 million . We do not expect to collect $1.1 million of the Ferrara Bros. acquired accounts receivable. The fair value of the Heavy acquired accounts receivable is $1.0 million , pending further analysis, with a gross contractual amount of $4.3 million . We do not expect to collect $3.3 million of the Heavy acquired accounts receivable, pending further review. (3) Total consideration for the Ferrara Bros. acquisition includes $44.1 million of cash, approximately 442,000 shares of our common stock valued at approximately $15.1 million on the date of issuance, and $19.6 million for the fair value of the Ferrara Bros. Contingent Consideration as of the acquisition date. (4) Total consideration for the DuBrook acquisition includes $11.5 million of cash and $0.6 million for the fair value of the Dubrook Earn-out as of the acquisition date. (5) Total consideration for the Wantage acquisition includes $15.2 million of cash and $2.8 million for the fair value of deferred payments due to the previous owners. (6) Total consideration for the Heavy acquisition includes $20.9 million of cash and $4.8 million for the fair value of deferred payments due to the previous owners. (7) The purchase price allocation for the acquisitions included in the caption "All Other" above are preliminary and remain subject to adjustments, including, but not limited to, the fair value of identifiable intangible assets and property, plant and equipment. Total consideration for acquisitions included in the caption "All Other" above includes $13.0 million of cash and $1.7 million for the fair value of deferred payments due to the previous owners. 2014 Acquisitions On October 20, 2014 , we acquired the assets of Custom-Crete ("Custom-Crete"), with operations in Dallas / Fort Worth, Houston, San Antonio, and Austin, Texas from Oldcastle Architectural, Inc., a wholly owned subsidiary of CRH plc ("Oldcastle Architectural") for $37.4 million in cash, plus a deferred payment of $0.8 million to be paid upon the division of certain shared properties, less final working capital adjustments of $1.6 million . The fair value of the assets acquired and liabilities assumed in the Custom-Crete acquisition is final. On December 5, 2014 , we acquired the assets of Mobile-Crete of South Texas, LLC and Scofield Construction Services, LLC (collectively, "Mobile-Crete") with operations in San Antonio, Austin, and south Texas for $21.5 million in cash, plus potential earn-out payments of up to $3.0 million in cash (the "Mobile-Crete Earn-out"). The earn-out payments of up to $1.5 million , which are due on the first and second anniversary of the acquisition date, are tied to the applicable year's average daily closing price of West Texas Intermediate crude oil ("WTI") reaching certain predetermined levels. The fair value of the assets acquired and liabilities assumed in the Mobile-Crete acquisition is final. The Custom-Crete and Mobile-Crete acquisitions included 16 volumetric ready-mixed concrete facilities and 109 volumetric ready-mixed concrete trucks. The addition of these operations expanded our presence into all of the major metropolitan markets in Texas and provided us with the capability to deliver ready-mixed concrete to our customers via on-site batching and mixing to customer specifications. On October 20, 2014 , we acquired the equity of New York Sand and Stone, LLC ("NYSS") for $15.2 million in cash, less final working capital adjustments of $0.8 million . The NYSS acquisition included leases to operate two aggregate distribution terminals in New York. These terminals allow us to deliver raw materials more efficiently to our New York and New Jersey markets. The fair value of the assets acquired and liabilities assumed in the NYSS acquisition are final. During the year ended December 31, 2014 , we also completed six other individually immaterial acquisitions comprised of seven ready-mixed concrete plants and related assets in our New York and west Texas markets. The aggregate consideration paid consisted of $15.5 million in cash and $1.1 million in promissory notes. The acquisition of these assets expanded our business in our existing markets. The fair values of the assets acquired and liabilities assumed from these six ready-mixed concrete acquisitions are final. We have made changes to the preliminary purchase price allocations for the 2014 acquisitions during the year ended December 31, 2015 primarily related to (i) fair value estimates of assets acquired and liabilities assumed for Mobile-Crete and Custom-Crete, (ii) working capital adjustments for Custom-Crete, Mobile-Crete, and NYSS, (iii) valuation of the Mobile-Crete Earn-out and Mobile-Crete identifiable intangible assets, (iv) valuation of Custom-Crete land rights and deferred payment, and (v) changes in the valuation of identifiable intangible assets for three of the six acquisitions included in "All Other" in the table below. The following table summarizes the total consideration for the 2014 acquisitions and presents the allocation of these amounts to the net tangible and intangible assets acquired and liabilities assumed based on the estimated fair values as of the respective acquisition dates (in thousands). 2014 Acquisitions Custom-Crete (1) NYSS Mobile-Crete (2) All Other (3) Accounts receivable (4) $ 3,669 $ 5,898 $ 2,578 $ — Inventory 522 1,161 336 295 Other current assets — 134 — 102 Property, plant and equipment 11,802 1,442 4,156 7,400 Intangible assets 11,078 5,042 8,630 4,722 Total assets acquired $ 27,071 $ 13,677 $ 15,700 $ 12,519 Current liabilities 2,598 2,539 1,284 — Long-term liabilities 473 — — — Total liabilities assumed $ 3,071 $ 2,539 $ 1,284 $ — Goodwill 12,513 3,260 8,685 4,050 Total consideration $ 36,513 $ 14,398 $ 23,101 $ 16,569 (1) Total consideration for the Custom-Crete acquisition includes $35.8 million of cash and $0.7 million for the fair value of a deferred payment as of the acquisition date to be paid upon the division of certain shared properties. (2) Total consideration for the Mobile-Crete acquisition includes $21.5 million of cash and $1.6 million for the fair value of the Mobile-Crete Earn-out as of the acquisition date. (3) Total consideration for acquisitions included in the caption "All Other" above includes $15.5 million of cash and $1.1 million for the fair value of notes payable due to the previous owners as of the acquisition date. These allocations require the significant use of estimates and are based on information that was available to management at the time these consolidated financial statements were prepared. We utilized recognized valuation techniques, including the income approach, sales approach, and cost approach to value the net assets acquired. See Note 13 for additional information regarding valuation of contingent consideration. Acquired Intangible Assets and Goodwill Acquired intangible assets in 2015 and 2014 of $95.9 million consisted of trade names, customer relationships, non-compete agreements, leasehold interests, a favorable contract, backlog, and land rights. With the exception of land rights, the amortization period of these intangible assets range from one year to 25 years. The land rights have an indefinite life. The major classes of intangible assets acquired in the 2015 and 2014 acquisitions were as follows (in thousands): Weighted Average Amortization Period (In Years) Fair Value At Acquisition Date Trade names 22.98 $ 39,002 Customer relationships 8.29 32,469 Non-compete agreements 4.92 10,167 Leasehold interests 12.24 7,525 Favorable contract 3.50 3,650 Backlog 1.00 1,640 Land rights indefinite-lived 1,478 Total $ 95,931 During the year ended December 31, 2015 , we recorded $9.7 million of amortization expense related to these intangible assets. As of December 31, 2015 , the estimated future aggregate amortization expense of intangible assets from the 2015 and 2014 acquisitions was as follows (in thousands): Year Ending December 31, 2016 $ 10,476 2017 9,870 2018 9,422 2019 8,013 2020 6,377 Thereafter 40,005 Total $ 84,163 The goodwill ascribed to each of these acquisitions is related to the synergies we expect to achieve with expansion in the markets in which we already operate as well as entry into new metropolitan areas of our existing geographic markets. The goodwill relates to our ready-mixed concrete reportable segment with the exception of Heavy, Wantage, NYSS, and one of the two 2015 acquisitions included in the caption "All Other." Goodwill resulting from the Heavy acquisition relates to our ready-mixed concrete reportable segment and our aggregate products reportable segment. Goodwill resulting from the Wantage acquisition and one of the two 2015 acquisitions included in the caption "All Other" relates to our aggregate products reportable segment. Goodwill resulting from the NYSS acquisition relates to our other non-reportable segments. See Note 4 for the allocation of goodwill from our 2014 and 2015 acquisitions to our segments. We expect the goodwill to be deductible for tax purposes, with the exception of the Right Away acquisition. See Note 16 for additional information regarding income taxes. Actual and Pro Forma Impact of Acquisitions We recorded approximately $232.5 million of revenue and $13.4 million of income from operations in our consolidated results of operations for the year ended December 31, 2015 related to the 2014 and 2015 acquisitions following their respective dates of acquisition. We recorded approximately $16.6 million of revenue and $0.8 million of income from operations in our consolidated results of operations for the year ended December 31, 2014 related to the 2014 acquisitions following their respective dates of acquisition. The unaudited pro forma information presented below reflects the combined financial results for all of the acquisitions completed during 2014 excluding three of the six acquisitions that are included in the caption "All Other" in the table captioned "2014 Acquisitions" above, as historical financial results for these operations was not material and impractical to obtain from the former owners. Additionally, one of the two 2015 acquisitions that are included in the caption "All Other" in the table captioned "2015 Acquisitions" above was excluded as historical financial results for this operation was not material and impractical to obtain from the former owners. All other acquisitions have been included and represent our estimate of the results of operations for the years ended December 31, 2015 and 2014 as if the 2014 acquisitions had been completed on January 1, 2013 and the 2015 acquisitions had been completed on January 1, 2014 (in thousands, except per share information): For the Years Ended December 31, (unaudited) 2015 2014 Revenue from continuing operations $ 1,033,058 $ 947,357 Net income $ 29,885 $ 23,317 Income per share, basic $ 2.12 $ 1.72 Income per share, diluted $ 1.92 $ 1.68 The above pro forma results are unaudited and were prepared based on the historical U.S. GAAP results of the Company and the historical results of the 12 acquired companies for which financial information was available, based on data provided by the former owners. These results are not necessarily indicative of what the Company's actual results would have been had the 2014 acquisitions occurred on January 1, 2013 and the 2015 acquisitions occurred on January 1, 2014. The unaudited pro forma net income (loss) and net income (loss) per share amounts above reflect the following adjustments: Years Ended December 31, 2015 2014 Decrease in intangible amortization expense $ (243 ) $ (11,040 ) Increase in depreciation expense 231 755 Exclusion of buyer transaction costs 2,774 1,941 Exclusion of seller transaction costs 46 — Exclusion of pension expense for pension plan acquired 212 737 Exclusion of segment results for segment not acquired (99 ) (547 ) Increase in interest expense (243 ) (980 ) Increase (decrease) in income tax expense 744 (3,550 ) Net adjustments $ 3,422 $ (12,684 ) As the purchase price allocations for Wantage, Heavy, and one of the two 2015 acquisitions that are included in the caption "All Other" in the table captioned "2015 Acquisitions" above are still preliminary and the fair value measurements for the related intangible assets has not been determined, no amortization of these intangible assets was included in the pro forma results. The unaudited pro forma results do not reflect any operational efficiencies or potential cost savings that may occur as a result of consolidation of the operations. Sale of Pennsylvania Precast Operations On June 2, 2015, we sold the fixed assets and inventory and assigned all open contracts associated with our one remaining precast concrete operation in Pennsylvania, to Architectural Precast Innovations, Inc. for net proceeds of $0.3 million in cash and a $1.2 million promissory note, net of a $0.1 million discount. Note repayments are due quarterly for a term of two years with an effective interest rate of 3.19% . This sale represented the final divestiture of the Company's owned assets related to precast concrete operations, which were classified as held for sale as of December 31, 2014.

DISCONTINUED OPERATIONS

DISCONTINUED OPERATIONS	12 Months Ended
	Dec. 31, 2015
Discontinued Operations and Disposal Groups [Abstract]
DISCONTINUED OPERATIONS	DISCONTINUED OPERATIONS As disclosed in Note 2, in June 2015, we completed the sale of substantially all of our assets associated with our one remaining precast concrete operation in Pennsylvania. We sold the operation's fixed assets and inventory for net proceeds of $0.3 million in cash and a promissory note of $1.2 million , net of a $0.1 million discount, and recorded a pre-tax loss on the transaction of $0.2 million . The pre-tax loss is included in discontinued operations in the accompanying condensed consolidated statements of operations. During 2014, we completed the sale of our remaining owned assets related to our California precast operations disposed of in 2012. We sold land and a building for net proceeds of $1.5 million in cash and recorded a pre-tax gain on the transaction of $0.6 million . Also in 2014, we recorded an impairment loss on long-lived assets of $0.9 million related to our Pennsylvania precast concrete operation as the carrying value exceeded the net realizable value of the related long-lived assets. The pre-tax gain on disposal of assets and the loss on impairment of long-lived assets are included in discontinued operations for the year ended December 31, 2014 . We have presented the results of operations for these units for all periods as discontinued operations in the accompanying consolidated statements of operations. The results of these discontinued operations were as follows (in thousands): Years Ended December 31, 2015 2014 2013 Revenue $ 5,523 $ 8,920 $ 16,914 Depreciation, depletion and amortization, or DD&A — — (148 ) Operating expenses, excluding DD&A, and other income (5,830 ) (9,481 ) (18,448 ) Loss from discontinued operations (307 ) (561 ) (1,682 ) (Loss) gain on disposal of assets (193 ) 640 (219 ) Loss on impairment of long-lived assets — (900 ) — Loss from discontinued operations, before income taxes (500 ) (821 ) (1,901 ) Income tax (benefit) expense (180 ) 172 (45 ) Loss from discontinued operations $ (320 ) $ (993 ) $ (1,856 ) Cash flows from operating activities included operating cash flows used in discontinued operations of $0.4 million and $1.5 million for the years ended December 31, 2015 and 2014, respectively, and $2.3 million of operating cash flows provided by discontinued operations for the year ended December 31, 2013. Cash flows from investing activities included investing cash flows provided by discontinued operations of $0.4 million and $1.5 million , for the years ended December 31, 2015 and 2014, respectively, and $2.3 million of investing cash flows used in discontinued operations for the year ended December 31, 2013. Below is a summary of the assets and liabilities associated with our one remaining precast concrete operation sold in June 2015, which was classified as held for sale as of December 31, 2014 (in thousands): December 31, 2014 Trade accounts receivable, net $ 1,337 Inventories 704 Other current assets 897 Property, plant, and equipment, net 841 Total assets held for sale $ 3,779 Accounts payable $ 398 Accrued liabilities 504 Total liabilities held for sale $ 902

GOODWILL AND INTANGIBLE ASSETS,

GOODWILL AND INTANGIBLE ASSETS, NET	12 Months Ended
	Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL AND INTANGIBLE ASSETS, NET	GOODWILL AND INTANGIBLE ASSETS, NET Goodwill We completed our annual assessment of goodwill impairment during the fourth quarter of 2015 for those units with goodwill as of October 1, 2015, and there was no impairment. In the absence of any evidence to the contrary, we consider goodwill resulting from acquisitions in the fourth quarter of 2015 to be recorded at fair value and not impaired, as the arm's length transactions that generated the goodwill were completed at a market rate. The changes in goodwill by reportable segment from January 1, 2014 to December 31, 2015 were as follows (in thousands): Ready-mixed Concrete Segment Aggregate Products Segment Other Non-Reportable Segments Total Balance at January 1, 2014 $ 11,646 $ — $ — $ 11,646 Acquisitions (See Note 2) 36,111 — 3,000 39,111 Balance at December 31, 2014 47,757 — 3,000 50,757 Acquisitions (See Note 2) 46,062 13,984 — 60,046 All other purchase price allocation adjustments (See Note 2) (10,861 ) — 262 (10,599 ) Balance at December 31, 2015 $ 82,958 $ 13,984 $ 3,262 $ 100,204 Goodwill acquired during 2015 and 2014 resulted from our acquisitions in those respective years and which are more fully described in Note 2. Intangible Assets Our purchased intangible assets were as follows (in thousands) as of December 31, 2015 and 2014 : December 31, 2015 Gross Accumulated Amortization Net Weighted Average Remaining Life (in years) Definite-lived intangible assets Trade names $ 40,302 $ (2,060 ) $ 38,242 22.04 Customer relationships 45,969 (7,939 ) 38,030 7.34 Non-competes 10,167 (2,211 ) 7,956 3.87 Leasehold interests 7,525 (668 ) 6,857 10.49 Favorable contract 3,650 (869 ) 2,781 2.67 Backlog 1,640 (1,230 ) 410 0.25 Total definite-lived intangible assets 109,253 (14,977 ) 94,276 13.07 Indefinite-lived intangible assets Land rights (1) 1,478 — 1,478 Total purchased intangible assets $ 110,731 $ (14,977 ) $ 95,754 (1) Land rights acquired in the Custom-Crete acquisition will be reclassified to property, plant and equipment upon the division of certain shared properties and settlement of the associated deferred payment. For further information, see Note 2. December 31, 2014 Gross Accumulated Amortization Net Weighted Average Remaining Life (in years) Trade names $ 4,200 $ (330 ) $ 3,870 9.31 Customer relationships 23,540 (3,214 ) 20,326 8.06 Non-competes 4,421 (218 ) 4,203 4.58 Leasehold interest 3,382 (61 ) 3,321 9.63 Total purchased intangible assets $ 35,543 $ (3,823 ) $ 31,720 7.91 We recorded $11.2 million , $2.1 million and $2.0 million of amortization expense on our intangibles for the years ended December 31, 2015 , 2014 and 2013 , respectively, which is included in our consolidated statements of operations. As of December 31, 2015 , the estimated remaining amortization of our definite-lived intangible assets was as follows (in thousands): Year Ending December 31, 2016 $ 11,956 2017 11,350 2018 10,902 2019 9,493 2020 7,857 Thereafter 42,718 Total $ 94,276

INVENTORIES

INVENTORIES	12 Months Ended
	Dec. 31, 2015
Inventory Disclosure [Abstract]
INVENTORIES	INVENTORIES Inventory as of December 31, 2015 and 2014 consisted of the following (in thousands): December 31, 2015 2014 Raw materials $ 33,792 $ 29,263 Building materials for resale 1,736 1,479 Other 1,198 980 $ 36,726 $ 31,722

PROPERTY, PLANT AND EQUIPMENT

PROPERTY, PLANT AND EQUIPMENT	12 Months Ended
	Dec. 31, 2015
Property, Plant and Equipment [Abstract]
PROPERTY, PLANT AND EQUIPMENT	PROPERTY, PLANT AND EQUIPMENT Property, plant and equipment, net as of December 31, 2015 and 2014 consisted of the following (in thousands): December 31, 2015 2014 Land and mineral deposits $ 69,265 $ 47,618 Buildings and improvements 17,198 16,648 Machinery and equipment 131,209 95,710 Mixers, trucks and other vehicles 117,448 80,001 Other 227 242 Construction in progress 15,255 9,267 350,602 249,486 Less: accumulated depreciation and depletion (102,479 ) (72,962 ) $ 248,123 $ 176,524 As of December 31, 2015 and 2014, the net carrying amounts of mineral deposits were $28.1 million and $11.3 million , respectively. As of December 31, 2015 and 2014 , gross assets recorded under capital leases, consisting primarily of drum mixer trucks, were $20.5 million and $8.6 million , respectively, and accumulated amortization was $1.3 million and $0.6 million , respectively. We recorded $32.4 million , $21.8 million and $16.9 million of depreciation and depletion expense on our property, plant and equipment for the years ended December 31, 2015 , 2014 and 2013 , respectively, which is included in our consolidated statements of operations.

ALLOWANCE FOR DOUBTFUL ACCOUNTS

ALLOWANCE FOR DOUBTFUL ACCOUNTS AND CUSTOMER DISPUTES	12 Months Ended
	Dec. 31, 2015
Receivables [Abstract]
ALLOWANCE FOR DOUBTFUL ACCOUNTS AND CUSTOMER DISPUTES	ALLOWANCE FOR DOUBTFUL ACCOUNTS AND CUSTOMER DISPUTES Activity in our allowance for doubtful accounts receivable and customer disputes consisted of the following (in thousands): December 31, 2015 2014 Balance, beginning of period $ 3,726 $ 2,813 Provision for doubtful accounts and customer disputes 4,198 1,924 Uncollectible receivables written off, net of recoveries (1,799 ) (1,011 ) Balance, end of period $ 6,125 $ 3,726

ACCRUED LIABILITIES

ACCRUED LIABILITIES	12 Months Ended
	Dec. 31, 2015
Payables and Accruals [Abstract]
ACCRUED LIABILITIES	ACCRUED LIABILITIES Our accrued liabilities were as follows (in thousands): December 31, 2015 2014 Accrued materials $ 22,428 $ 14,319 Accrued insurance reserves 15,341 10,512 Accrued compensation and benefits 15,024 11,251 Accrued property, sales and other taxes 9,058 5,235 Deferred consideration 4,774 — Contingent consideration, current portion 2,635 2,250 Deferred rent 1,838 2,126 Accrued interest 1,500 1,487 Other 7,398 3,211 $ 79,996 $ 50,391

DEBT

DEBT	12 Months Ended
	Dec. 31, 2015
Debt Disclosure [Abstract]
DEBT	DEBT A summary of our debt and capital leases as of December 31, 2015 and 2014 was as follows (in thousands): December 31, 2015 2014 Senior secured notes due 2018 $ 200,000 $ 200,000 Senior secured credit facility 45,000 — Convertible secured notes due 2015 — 117 Capital leases 16,555 7,395 Other financing 20,194 12,925 Total debt 281,749 220,437 Less: current maturities 9,386 5,104 Long-term debt, net of current maturities $ 272,363 $ 215,333 As of December 31, 2015, the principal amounts due under our debt agreements for the next five years and thereafter were as follows (in thousands): Year Ending December 31, 2016 $ 9,386 2017 9,389 2018 254,037 2019 6,191 2020 2,633 Thereafter 113 $ 281,749 Senior Secured Notes due 2018 On November 22, 2013, we completed an offering of $200.0 million aggregate principal amount of 2018 Notes at an offering price of 100% . We used a portion of the net proceeds from the 2018 Notes to repay all of our outstanding borrowings under the Revolving Facility and to redeem all of our outstanding 9.5% senior secured notes due 2015 (the "2013 Notes"). The 2018 Notes are governed by an indenture (the “Indenture”) dated as of November 22, 2013, by and among us and U.S. Bank National Association, as trustee and noteholder collateral agent. We are obligated to pay interest at 8.5% on the 2018 Notes on June 1 and December 1 of each year. The 2018 Notes mature on December 1, 2018, and are redeemable at our option prior to maturity at prices specified in the Indenture. The Indenture contains negative covenants that restrict our ability and our restricted subsidiaries' ability to engage in certain transactions, as described below, and also contains customary events of default. The Indenture contains covenants that restrict or limit our ability to, among other things: • incur additional indebtedness or issue disqualified stock or preferred stock; • pay dividends or make other distributions or repurchase or redeem our stock or subordinated indebtedness or make investments; • prepay, redeem or repurchase certain debt; • sell assets or issue capital stock of our restricted subsidiaries; • incur liens; • enter into agreements restricting our restricted subsidiaries’ ability to pay dividends, make loans to other U.S. Concrete entities or restrict the ability to provide liens; • enter into transactions with affiliates; • consolidate, merge or sell all or substantially all of our assets; • engage in certain sale / leaseback transactions; and • designate our subsidiaries as unrestricted subsidiaries. As defined in the Indenture, we are entitled to incur indebtedness if, on the date of such incurrence and given effect thereto on a proforma basis, the consolidated coverage ratio exceeds 2.0 to 1.0. Our obligations under the 2018 Notes are jointly and severally and fully and unconditionally guaranteed on a senior secured basis by each of our existing and future domestic subsidiaries that guarantee the indebtedness under the Revolving Facility. Each guarantee is subject to release in the following customary circumstances: • a disposition of all or substantially all of the assets of the guarantor subsidiary, by way of merger, consolidation or otherwise; provided the proceeds of the disposition are applied in accordance with the Indenture; • a disposition of the capital stock of the guarantor subsidiary to a third person, if the disposition complies with the Indenture and as a result the guarantor subsidiary ceases to be a restricted subsidiary; • the designation by us of the guarantor subsidiary as an unrestricted subsidiary or the guarantor subsidiary otherwise ceases to be a restricted subsidiary, in each case in accordance with the Indenture; or • legal or covenant defeasance of the 2018 Notes and discharge of our obligations under the Indenture. The 2018 Notes are issued by U.S. Concrete, Inc., the parent company, and are guaranteed on a full and unconditional basis by each of its indirect wholly owned subsidiaries. The guarantees are joint and several, and there are no non-guarantor subsidiaries. U.S. Concrete, Inc. does not have any independent assets or operations. There are no significant restrictions on the ability of the Company or any guarantor to obtain funds from its subsidiaries by dividend or loan. The 2018 Notes and the guarantees thereof rank equally in right of payment with all of our existing and future senior indebtedness. The 2018 Notes and the guarantees thereof are secured by first-priority liens on certain of the property and assets directly owned by us, including material owned real property, fixtures, intellectual property, capital stock of subsidiaries and certain equipment, subject to permitted liens and certain exceptions, and by a second-priority lien on our assets securing the Revolving Facility on a first-priority basis, including inventory (including as-extracted collateral), accounts, certain specified mixer trucks, chattel paper, general intangibles (other than collateral securing the 2018 Notes on a first-priority basis), instruments, documents, cash, deposit accounts, securities accounts, commodities accounts, letter of credit rights and all supporting obligations and related books and records and all proceeds and products of the foregoing, subject to permitted liens and certain exceptions. The 2018 Notes and the guarantees thereof are effectively subordinated to all indebtedness and other obligations, including trade payables, of each of our future subsidiaries that are not guarantors. As of both December 31, 2015 and 2014 , we recorded interest expense related to our 2018 Notes of $17.0 million . As of December 31, 2015 and 2014 , we had unamortized deferred financing fees on our 2018 Notes of $4.1 million and $5.5 million , respectively, which are included in other assets on the consolidated balance sheets. Senior Secured Credit Facility On October 29, 2013, we entered into a Loan and Security Agreement (the "2013 Loan Agreement") with the Lenders and the Administrative Agent, which amended and restated our existing credit agreement and provides us with the Revolving Facility. On November 18, 2015, we entered into a Second Amended and Restated Loan and Security Agreement (the “Second A/R Loan Agreement”) which amended and restated the 2013 Loan Agreement. Among other things, the Second A/R Loan Agreement increased the revolving commitments of the Revolving Facility from $175.0 million to $250.0 million and extended the maturity date to the earlier of (i) November 18, 2020 or (ii) sixty days prior to the maturity date of the Company’s 8.5% Senior Secured Notes due 2018 (if then outstanding) or the refinancing of debt thereof, as applicable. The Second A/R Loan Agreement also included an accordion feature that allows for increases in the total revolving commitments by as much as $100.0 million . Additionally, the applicable margin for each of the LIBOR loans and base rate loans was lowered so that, depending on the average availability under the Second A/R Loan Agreement, the applicable margin ranges from 1.25% to 1.75% for LIBOR loans and 0.00% to 0.50% for base rate loans. As of December 31, 2015 , we had $45.0 million of outstanding borrowings on the Second A/R Loan Agreement. The weighted average interest rate for the Second A/R Loan Agreement was 1.77% as of December 31, 2015 . As of December 31, 2014, we had no outstanding borrowings under the Revolving Facility. As of both December 31, 2015 and 2014, we had $11.3 million of undrawn standby letters of credit under the Revolving Facility. Our actual maximum credit availability under the Second A/R Loan Agreement varies from time to time and is determined by calculating the value of our eligible accounts receivable, inventory, mixer trucks and, after the occurrence of certain events, machinery, which serve as priority collateral on the facility, minus reserves imposed by the Lenders and other adjustments, all as specified in the Second A/R Loan Agreement and discussed further below. Our availability under the Revolving Facility at December 31, 2015 increased to $131.2 million from $109.8 million at December 31, 2014 . The Second A/R Loan Agreement also contains a provision for discretionary over-advances and involuntary protective advances by Lenders of up to $25.0 million in excess of borrowing base levels. The Second A/R Loan Agreement provides for swingline loans, up to a $15.0 million sublimit, and letters of credit, up to a $30.0 million sublimit. Advances under the Revolving Facility are in the form of either base rate loans or “LIBOR loans” denominated in U.S. dollars. The interest rate for base rate loans denominated in U.S. dollars fluctuates and is equal to the greater of (a) Bank of America’s prime rate; (b) the Federal funds rate, plus 0.50% ; or (c) the rate per annum for a 30 days interest period equal to the British Bankers Association LIBOR Rate, as published by Reuters at approximately 11:00 a.m. (London time) two business days prior (“LIBOR”), plus 1.0% ; in each case plus the Applicable Margin, as defined in the Second A/R Loan Agreement. The interest rate for LIBOR loans denominated in U.S. dollars is equal to the rate per annum for the applicable interest period equal to LIBOR, plus the Applicable Margin, as defined in the Second A/R Loan Agreement. Issued and outstanding letters of credit are subject to a fee equal to the Applicable Margin, as defined in the Second A/R Loan Agreement, a fronting fee equal to 0.125% per annum on the stated amount of such letter of credit, and customary charges associated with the issuance and administration of letters of credit. Among other fees, we pay a commitment fee of either 0.25% or 0.375% per annum (due monthly) on the aggregate unused revolving commitments under the Revolving Facility. The fee we pay is determined by whether the amount of the unused line is above or below 50% of the aggregate Revolver Commitments, as defined in the Second A/R Loan Agreement. The Applicable Margin ranges from 0.00% to 0.50% for base rate loans and from 1.25% to 1.75% for LIBOR loans, and is determined based on Average Availability for the most recent fiscal quarter, as defined in the Second A/R Loan Agreement. Up to $30.0 million of the Revolving Facility is available for the issuance of letters of credit, and any such issuance of letters of credit will reduce the amount available for loans under the Revolving Facility. Advances under the Revolving Facility are limited by a borrowing base which is equal to the least of (a) the aggregate amount of Revolver Commitments minus the LC Reserve, the Senior Notes Availability Reserve, and the Tax Amount, all as defined in the Second A/R Loan Agreement, (b) the sum of (i) 90% of the face amount of eligible accounts receivable (reduced to 85% under certain circumstances), plus (ii) the lesser of (i) 70% of the value of eligible inventory or (y) 90% of the product of (A) the net orderly liquidation value of inventory divided by the value of the inventory and (B) multiplied by the value of eligible inventory, and (iii) the sum of (x) (A) 85% of the net orderly liquidation value (as determined by the most recent appraisal) of eligible trucks and machinery plus (B) 80% of the cost of newly acquired eligible trucks since the date of the latest appraisal of eligible trucks minus (C) 85% of the net orderly liquidation value of eligible trucks and machinery that have been sold since the latest appraisal date and 85% of the depreciation amount applicable to eligible trucks and machinery since the date of the latest appraisal of eligible trucks and machinery, plus (y) (A) 85% of the net orderly liquidation value of eligible inventory (as determined by the most recent appraisal), minus (B) 85% of the net orderly liquidation value of eligible machinery that have been sold since the date of the latest appraisal of eligible machinery, minus (C) 85% of the depreciation amount applicable to eligible machinery, minus the Availability Reserve, minus the Tax Amount; provided, notwithstanding anything herein to the contrary, in determining the Borrowing Base pursuant to this clause (b), the value of machinery shall only be included after a refinancing of, or amendment to, the 2018 Notes such that the Revolving Facility will have a first lien on machinery, and the Borrowing Base attributable to the eligible truck and eligible machinery shall not exceed the amount equal to thirty percent ( 30% ) of the Borrowing Base as of such date of determination; or (c) the amount of a borrowing base set forth in the 2018 Notes, minus the greater of (i) $10.0 million and (ii) the amount equal to 5% of such borrowing base set forth in the 2018 Notes; provided however, in any event, clause (c) of the definition of borrowing base shall be permanently terminated if the 2018 Senior Notes have been amended or refinanced, in each case with the effect that the ABL cap amount in the applicable intercreditor agreement and/or the documentation governing such refinancing debt shall be no less than 110% of the aggregate Revolver Commitments (terms used in the foregoing description of borrowing base shall have the definitions provided in the Second A/R Loan Agreement). The administrative agent may, in its permitted discretion, reduce the advance rates set forth above, adjust reserves or reduce one or more of the other elements used in computing the borrowing base. The Second A/R Loan Agreement contains usual and customary negative covenants including, but not limited to, restrictions on our ability to consolidate or merge; substantially change the nature of our business; sell, lease or otherwise transfer any of our assets; create or incur indebtedness; create liens; pay dividends; and make investments or acquisitions. The negative covenants are subject to certain exceptions as specified in the Second A/R Loan Agreement. The Second A/R Loan Agreement also requires that we, upon the occurrence of certain events, maintain a fixed charge coverage ratio of at least 1.0 to 1.0 for each period of 12 calendar months, as determined in accordance with the Second A/R Loan Agreement. For the trailing 12 month period ended December 31, 2015 , our fixed charge coverage ratio was 3.58 to 1.0. As of December 31, 2015 , we were in compliance with all covenants under the Second A/R Loan Agreement. The Second A/R Loan Agreement also includes customary events of default, including, among other things, payment default, covenant default, breach of representation or warranty, bankruptcy, cross-default, material ERISA events, change of control, material money judgments and failure to maintain subsidiary guarantees. The Second A/R Loan Agreement is secured by a first-priority lien on certain assets of the Company and our guarantors, including inventory (including as-extracted collateral), accounts receivable, certain specified mixer trucks, general intangibles (other than collateral securing the 2018 Notes on a first-priority basis, as described above), instruments, documents, chattel paper, cash, deposit accounts, securities accounts, commodities accounts, letter of credit rights and all supporting obligations and related books and records and all proceeds and products of the foregoing, subject to permitted liens and certain exceptions. The Second A/R Loan Agreement is also secured by a second-priority lien on the collateral securing the 2018 Notes as defined below on a first-priority basis (see “Senior Secured Notes due 2018” above). For the years ended December 31, 2015 and 2014 , we recorded interest expense related to the Revolving Facility of $0.4 million and $0.3 million , respectively. As of December 31, 2015 and 2014 , we had unamortized deferred financing fees on our Revolving Facility of $2.0 million and $1.3 million , respectively, which are included in other assets on the consolidated balance sheets. Senior Secured Notes due 2015 On March 22, 2013, we completed our offer to exchange (the “Exchange Offer”) up to $69.3 million aggregate principal amount of newly issued 2013 Notes for all $55.0 million aggregate principal amount of our Convertible Notes. At the time of settlement, we issued $61.1 million aggregate principal amount of 2013 Notes in exchange for $48.5 million of Convertible Notes, plus approximately $0.3 million in cash for accrued and unpaid interest on the Convertible Notes exchanged in the Exchange Offer. After giving effect to the exchange, $6.5 million aggregate principal amount of Convertible Notes remained outstanding as of March 22, 2013 (see additional information under "Convertible Notes due 2015" below). In November 2013, we used a portion of the proceeds from our 2018 Notes offering to redeem all $61.1 million of our outstanding 2013 Notes. See Note 10 for additional information regarding the extinguishment of this debt. Convertible Notes due 2015 As described above, on August 31, 2010, we issued $55.0 million aggregate principal amount of Convertible Notes. During 2013, we exchanged $48.5 million of Convertible Notes for $61.1 million aggregate principal amount of 2013 Notes and $6.4 million of Convertible Notes for 0.6 million shares of common stock. The remaining Convertible Notes matured and were repaid on August 31, 2015. For the year ended December 31, 2013 , we recorded interest expense related to the interest rate and amortization of the discount on our Convertible Notes of $2.1 million . We recorded no interest expense for the Convertible Notes for the years ended December 31, 2015 and 2014. Capital Leases and Other Financing From 2013 through 2015, we signed a series of promissory notes with Daimler Truck Financial for the purchase of mixer trucks and other machinery and equipment in an aggregate principal amount of $25.3 million , with fixed annual interest rates ranging from 2.50% to 3.18% , payable monthly for a term of five years. From 2013 through 2015, we entered into leasing agreements with various lenders for the purchase of mixer trucks and other machinery and equipment for a total commitment of $20.2 million , with fixed annual interest rates ranging from 2.60% to 4.80% , payable monthly for terms ranging from four to five years. The lease terms include one dollar buyout options at the end of the lease terms. Accordingly, these financings have been classified as capital leases. The current portion of capital leases included in current maturities of long term debt was $4.0 million and $1.6 million as of December 31, 2015 and 2014, respectively. As of December 31, 2015 , we had four promissory notes outstanding that were issued primarily in connection with acquisitions completed between February 2014 and August 2014 in an aggregate principal amount of $1.4 million . These promissory notes are payable either monthly or annually over less than one year to nine years, with annual effective interest rates ranging from 3.49% to 3.75% . The weighted average interest rate of our capital leases and other financing was 3.07% as of December 31, 2015 and was 3.49% as of December 31, 2014 .

EXTINGUISHMENT OF DEBT

EXTINGUISHMENT OF DEBT	12 Months Ended
	Dec. 31, 2015
Extinguishment of Debt Disclosures [Abstract]
EXTINGUISHMENT OF DEBT	EXTINGUISHMENT OF DEBT As described in Note 9 above, concurrent with issuing the 2018 Notes in November 2013, we redeemed $61.1 million of our 2013 Notes issued in connection with the Exchange Offer. As such, during the fourth quarter of 2013, we wrote-off $1.6 million of previously deferred financing costs associated with the 2013 Notes and recorded the charge as loss on extinguishment of debt on the accompanying consolidated statements of operations. In 2013, holders of our Convertible Notes tendered $6.4 million of Convertible Notes in exchange for 0.6 million shares of our common stock. As a result of this Conversion Event (as defined in the indenture governing the Convertible Notes) during the third quarter of 2013, we wrote-off $0.3 million of previously deferred financing costs, $3.7 million of derivative liabilities, and $0.8 million of unamortized discount. We recorded a loss on extinguishment of debt of $1.7 million , which is included on the accompanying consolidated statements of operations. In March 2013, in connection with the Exchange Offer, described in Note 9 above, we exchanged $48.5 million of Convertible Notes for $61.1 million of 2013 Notes. As a result of the Exchange Offer, during the first quarter of 2013, we wrote-off $2.4 million of previously deferred financing costs, $26.6 million in derivative liabilities, and $7.3 million of unamortized discount. We recorded a gain on extinguishment of debt associated with this transaction of $4.3 million on the accompanying consolidated statements of operations. In connection with issuing the 2018 Notes and entering into the Second A/R Loan Agreement, we incurred $8.4 million of deferred financing costs. Deferred financing costs are classified as other assets on the accompanying consolidated balance sheet. These deferred financing costs are being amortized over the terms of the related agreements using the straight line method, which approximates the effective interest method.

DERIVATIVES

DERIVATIVES	12 Months Ended
	Dec. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVES	DERIVATIVES General We are exposed to certain risks relating to our ongoing business operations. However, derivative instruments are not used to hedge these risks. In accordance with ASC 815 - Derivatives and Hedging ("ASC 815"), we are required to account for derivative instruments as a result of the issuance of the Warrants and Convertible Notes on August 31, 2010. None of our derivative contracts manage business risk or are executed for speculative purposes. The following table presents the fair value of our derivative instruments (in thousands) as of December 31, 2015 and 2014 : Fair Value December 31, Derivative Instruments Not Designated as Balance Sheet Location 2015 2014 Warrants Derivative liabilities $ 67,401 $ 25,246 The following table presents the effect of derivative instruments (in thousands) on the accompanying consolidated statements of operations for the years ended December 31, 2015 , 2014 , and 2013 , excluding income tax effects: Years Ended December 31, Derivative Instruments Not Designated as Location of Loss 2015 2014 2013 Warrants Derivative loss $ (60,016 ) $ (3,556 ) $ (16,833 ) Convertible Note embedded derivative (1) Derivative loss — — (13,131 ) $ (60,016 ) $ (3,556 ) $ (29,964 ) (1) Our Convertible Notes embedded derivative was written-off in June 2013, as the remaining noteholders no longer had conversion rights after that date. Warrant volume positions are presented as the number of shares underlying the instruments. The table below presents our volume positions (in thousands) as of December 31, 2015 , 2014 , and 2013 : Number of Shares December 31, Derivative Instruments Not Designated as Hedging Instruments under ASC 815 2015 2014 2013 Warrants 2,361 2,999 3,000 We do not have any derivative instruments with credit features requiring the posting of collateral in the event of a credit downgrade or similar credit event.

OTHER LONG-TERM OBLIGATIONS AND

OTHER LONG-TERM OBLIGATIONS AND DEFERRED CREDITS	12 Months Ended
	Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
OTHER LONG-TERM OBLIGATIONS AND DEFERRED CREDITS	OTHER LONG-TERM OBLIGATIONS AND DEFERRED CREDITS Other long-term obligations and deferred credits are comprised primarily of contingent consideration obligations entered into with the former owners of acquired companies from 2012 through 2015 with terms ranging from two to six years. Our contingent consideration obligations are tied to varying thresholds of pre-determined sales volumes, WTI prices for the applicable year, and EBITDA and are recorded at their fair value (see Note 13). As of December 31, 2015 and 2014 , our long-term contingent consideration obligations were $27.5 million and $3.0 million , respectively, and reflect the portion we expect to pay beyond one year of the balance sheet date. We expect our obligations to cease during 2021. Our long-term deferred payment arrangements with the former owners of acquired companies range in terms from one to ten years. As of December 31, 2015 , our long-term deferred payment obligation was $5.3 million , and reflects the portion we expect to pay beyond one year of the balance sheet date. We expect our obligations to cease during 2025. There were no long-term deferred payment arrangements as of December 31, 2014. The remaining other long-term obligations and deferred credits balances consist primarily of our unrecognized tax benefits and related accrued interest and penalties (see Note 16).

FAIR VALUE DISCLOSURES

FAIR VALUE DISCLOSURES	12 Months Ended
	Dec. 31, 2015
Fair Value Disclosures [Abstract]
FAIR VALUE DISCLOSURES	FAIR VALUE DISCLOSURES Fair value is defined as the exit price, or the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants as of the measurement date. Accounting guidance also establishes a hierarchy for inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that the most observable inputs be used when available. Observable inputs are inputs market participants would use in valuing the asset or liability and are developed based on market data obtained from sources independent of us. Unobservable inputs are inputs that reflect our assumptions about the factors market participants would use in valuing the asset or liability. The guidance establishes three levels of inputs that may be used to measure fair value: Level 1—Quoted prices in active markets for identical assets or liabilities. Level 2—Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 3—Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. Assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurements. We review the fair value hierarchy classification on a quarterly basis. Changes in the observability of valuation inputs may result in a reclassification of levels for certain assets and liabilities within the fair value hierarchy. The following tables present our fair value hierarchy for liabilities measured at fair value on a recurring basis as of December 31, 2015 and 2014 (in thousands): As of December 31, 2015 Total Level 1 Level 2 Level 3 Derivative – Warrants $ 67,401 $ — $ 67,401 $ — Contingent consideration, including current portion (1) (2) (3) (4) (5) (6) 30,119 — — 30,119 $ 97,520 $ — $ 67,401 $ 30,119 As of December 31, 2014 Total Level 1 Level 2 Level 3 Derivative – Warrants $ 25,246 $ — $ — $ 25,246 Contingent consideration (1) (2) 5,344 — — 5,344 $ 30,590 $ — $ — $ 30,590 (1) The current portion of contingent consideration is included in accrued liabilities in our consolidated balance sheets. The long-term portion of contingent consideration is included in other long-term obligations and deferred credits in our consolidated balance sheets. (2) Includes the fair value of the earn-out payments associated with the 2012 acquisition of Bode Gravel Co. and Bode Concrete LLC. The fair value was determined based on expected payouts that will be due to the former owners based on the achievement of certain incremental sales volume milestones, using a contractual discount rate of 7.0% . These payments were capped at a fair value of $3.5 million as of December 31, 2015 and $5.3 million as of December 31, 2014 . (3) Includes the fair value of the Mobile-Crete Earn-out (see Note 2). The fair value was determined based on expected payouts that will be due to the former owners based on probability-weighted assumptions related to average annual WTI prices reaching certain predetermined levels from December 8, 2015 through December 7, 2016, using a discount rate of 3.50% . The fair value of the Mobile-Crete Earn-out was less than $0.1 million as of December 31, 2015 . (4) Includes the fair value of the Right Away Earn-out (see Note 2). The fair value was determined based on expected payouts that will be due to the former owners based on probability-weighted assumptions related to the achievement of sales volume milestones, using a discount rate of 8.50% . The fair value of the Right Away Earn-out was $4.7 million as of December 31, 2015 . (5) Includes the fair value of the Ferrara Bros. Contingent Consideration (see Note 2). The fair value was determined based on the expected vesting of incentive awards granted to the former owners at acquisition based on probability-weighted assumptions related to the achievement of certain EBITDA thresholds, using a discount rate of 10.53% . The fair value of the Ferrara Bros. Contingent Consideration was $21.2 million as of December 31, 2015 . (6) Includes the fair value of the DuBrook Earn-out (see Note 2). The fair value was determined based on the expected payouts that will be due to the former owners based on probability-weighted assumptions related to the achievement of sales volume milestones, using a discount rate of 15.75% . The fair value of the DuBrook Earn-out was $0.7 million as of December 31, 2015 . The liability for the Warrants was valued utilizing a Black-Scholes-Merton model. Inputs into the model were based upon observable market data where possible. The key inputs in determining our derivative liabilities include our stock price, stock price volatility, and risk-free interest rates. As of December 31, 2015 , observable market data existed for all of the key inputs in determining the fair value of our Warrants. A reconciliation of the changes in Level 3 fair value measurements is as follows for December 31, 2015 and 2014 (in thousands): Warrants Contingent Consideration Balance at January 1, 2014 $ 21,690 $ 7,000 Total losses included in earnings (1) 3,560 — Payment on contingent consideration — (1,656 ) Write-off of derivative on exercised Warrants (2) (4 ) — Balance at December 31, 2014 25,246 5,344 Acquisitions (3) — 25,707 Total losses included in earnings (1) 19,551 932 Payment on contingent consideration — (1,864 ) Write-off of derivative on exercised Warrants (2) (4 ) — Issuances of equity, net of cash proceeds (4) (56 ) — Transfer out (5) (44,737 ) — Balance at December 31, 2015 $ — $ 30,119 (1) Represents the loss on revaluation of Warrants from January 1, 2014 through June 30, 2015, which is included in derivative loss in our consolidated statements of operations, and the net gain on revaluation of contingent consideration, which is included in gain on revaluation of contingent consideration in our consolidated statements of operations. We recorded a net loss on revaluation of contingent consideration of $0.9 million in the year ended December 31, 2015 , as result of the estimate of future WTI prices offset by accretion of interest for the passage of time as well as changes in the probability-weighted assumptions related to the achievement of sales volumes and certain EBITDA thresholds. No gain or loss on revaluation of contingent consideration was recognized in the year ended December 31, 2014 . (2) Represents the pro rata portion of the derivative liability associated with exercised Warrants from January 1, 2014 through June 30, 2015 and measured at the date of share issuance, which is included in derivative loss in our consolidated statements of operations. (3) The liabilities for earn-outs and contingent considerations for acquisitions from 2014 and 2015 were valued using Monte Carlo simulations which incorporated probability-weighted assumptions related to the achievement of varying thresholds of pre-determined sales volumes, WTI prices for the applicable year, and EBITDA. Inputs into the models were based upon observable market data where possible. Where observable market data did not exist, we modeled inputs based upon similar observable inputs. The key inputs included discount rates ranging from 3.50% to 15.75% , a forecasted average of WTI prices from December 8, 2014 through December 7, 2016 from quoted sources, and management's estimates of future sales volumes and EBITDA. (4) Represents the pro rata portion of the derivative liability associated with exercised Warrants from January 1, 2014 through June 30, 2015 and measured at the date of share issuance, which is included in additional paid-in capital in our condensed consolidated balance sheets. (5) Transfer out of Level 3 financial liabilities was due to changes in the observability of market inputs used in the valuation of our Warrants. The transfer was measured as of June 30, 2015, the end of the period in which the transfer occurred.

STOCKHOLDERS' EQUITY

STOCKHOLDERS' EQUITY	12 Months Ended
	Dec. 31, 2015
Equity [Abstract]
STOCKHOLDERS’ EQUITY	STOCKHOLDERS’ EQUITY Common Stock and Preferred Stock The following table presents information regarding U.S. Concrete’s common stock (in thousands): December 31, 2015 2014 Shares authorized 100,000 100,000 Shares outstanding at end of period 14,871 13,978 Shares held in treasury 842 697 Under our restated certificate of incorporation, we are authorized to issue 100.0 million shares of common stock, par value $0.001 , and 10.0 million shares of preferred stock, $0.001 par value. Additionally, we are authorized to issue “blank check” preferred stock, which may be issued from time to time in one or more series upon authorization by our Board. The Board, without further approval of the stockholders, is authorized to fix the dividend rights and terms, conversion rights, voting rights, redemption rights and terms, liquidation preferences, and any other rights, preferences and restrictions applicable to each series of the preferred stock. The issuance of preferred stock, while providing flexibility in connection with possible acquisitions and other corporate purposes could, among other things, adversely affect the voting power of the holders of our common stock and, under certain circumstances, make it more difficult for a third party to gain control of us, discourage bids for our common stock at a premium or otherwise affect the market price of our common stock. There was no preferred stock issued or outstanding as of December 31, 2015 and 2014 . Common Stock Issuance During the second quarter of 2015, we issued approximately 442,000 shares of common stock with a total value of $15.1 million as part of the consideration for the Ferrara Bros. acquisition (see Note 2). Share Repurchase Program In May 2014, our Board authorized a program to repurchase up to $50.0 million of our outstanding common stock (the "Share Repurchase Program") until the earlier of March 31, 2017, or a determination by the Board to discontinue the repurchase program. We made no repurchases of our common stock during the year ended December 31, 2015 under the Share Repurchase Program. We made a related party share repurchase of our common stock during the second quarter of 2014 as discussed below. Related Party Share Repurchase During the second quarter of 2014, as part of the Share Repurchase Program, we paid $4.8 million in cash to Whippoorwill Associates, Inc. ("Whippoorwill") pursuant to a privately negotiated agreement to repurchase 200,000 shares of our common stock. We repurchased the shares for $24.12 per share, which was the closing price of our common stock on the NASDAQ stock market on the trading day prior to the repurchase. As of May 19, 2014, and prior to the transaction, Whippoorwill owned approximately 3.0 million shares, or approximately 21% , of our outstanding common stock and, as such, the transaction was considered a related party repurchase. In addition, we paid $0.1 million in legal fees associated with the Whippoorwill share repurchase. There were no related party share repurchases during the year ended December 31, 2015 . Treasury Stock Employees may elect to satisfy their tax obligations on the vesting of their restricted stock by having the required tax payments withheld based on a number of vested shares having an aggregate value on the date of vesting equal to the tax obligation. As a result of such employee elections, we withheld approximately 145,000 shares during the year ended December 31, 2015 , at a total value of approximately $6.3 million , and approximately 83,000 shares during the year ended December 31, 2014 , at a total value of approximately $2.1 million . We accounted for the withholding of these shares as treasury stock.

WARRANTS

WARRANTS	12 Months Ended
	Dec. 31, 2015
Warrants and Rights Note Disclosure [Abstract]
WARRANTS	WARRANTS On August 31, 2010 (the "Effective Date"), we issued warrants to acquire common stock in two tranches: Class A Warrants to purchase an aggregate of approximately 1.5 million shares of common stock, and Class B Warrants to purchase an aggregate of approximately 1.5 million shares of common stock (collectively, the "Warrants"). The Warrants were issued to holders of our predecessor common stock pro rata based on a holder’s stock ownership as of the Effective Date. The Warrants have been included in derivative liabilities on the consolidated balance sheets (see Note 11) and are recorded at their fair value (see Note 13). The Warrants are also included in the potentially dilutive securities included in the calculation of diluted earnings (loss) per share as shares of our common stock would be issued if the Warrants were exercised (see Note 18). The Warrants are classified as a current liability on the consolidated balance sheets as they can be exercised by the holders at any time. As of December 31, 2015 , there were 1.1 million of Class A Warrants and 1.3 million of Class B Warrants outstanding. In connection with the issuance of the Class A Warrants, we entered into a Class A Warrant Agreement with American Stock Transfer & Trust Company, LLC, as warrant agent ("AST"). Subject to the terms of the Class A Warrant Agreement, each holder of a Class A Warrant is entitled to purchase one share of common stock at an exercise price of $22.69 per share. In connection with the issuance of the Class B Warrants, the Company entered into a Class B Warrant Agreement (collectively with the Class A Warrant Agreement, the "Warrant Agreements") with AST. Subject to the terms of the Class B Warrant Agreement, each holder of a Class B Warrant is entitled to purchase one share of common stock at an exercise price of $26.68 per share. Subject to the terms of the Warrant Agreements, both classes of Warrants have a seven year term and will expire on the seventh anniversary of the Effective Date. The Warrants may be exercised for cash or on a net issuance basis. If, at any time before the expiration date of the Warrants, we pay or declare a dividend or make a distribution on the common stock payable in shares of our capital stock, or make subdivisions or combinations of our outstanding shares of common stock into a greater or lesser number of shares or issue any shares of our capital stock by reclassification of common stock, then the exercise price and number of shares issuable upon exercise of the Warrants will be adjusted so that the holders of the Warrants will be entitled to receive the aggregate number and kind of shares that they would have received as a result of the event if their Warrants had been exercised immediately before the event. In addition, if we distribute to holders of the common stock an Extraordinary Distribution (defined in each Warrant Agreement to include assets, securities or warrants to purchase securities), then the exercise price of the Warrants will be decreased by the amount of cash and / or the fair market value of any securities or assets paid or distributed on each share of common stock. However, no adjustment to the exercise price will be made if, at the time of an Extraordinary Distribution, we make the same distribution to holders of Warrants as we make to holders of common stock pro rata based on the number of shares of common stock for which the Warrants are exercisable. In the event of a Fundamental Change (defined in each Warrant Agreement to include transactions such as mergers, consolidations, sales of assets, tender offers, exchange offers, reorganizations, reclassifications, compulsory share exchanges or liquidations in which all or substantially all of the outstanding common stock is converted into or exchanged for stock, other securities, cash or assets), if the consideration paid consists 90% or more of publicly traded securities, each holder of a Warrant will have the right upon any subsequent exercise to receive the kind and amount of stock, other securities, cash and assets that such holder would have received if the Warrant had been exercised immediately prior to such Fundamental Change. If a Fundamental Change occurs (other than a Fundamental Change in which the consideration paid consists at least 90% of publicly traded securities), then each holder of a Warrant will be entitled to receive an amount equal to the Fair Market Value (as defined in each of the Warrant Agreements) of their Warrant on the date the Fundamental Change is consummated. No adjustment in the exercise price of the Warrants shall be required unless such adjustment would require an increase or decrease of at least $0.05 in the exercise price; provided that any adjustments that are not required to be made shall be carried forward and taken into account in any subsequent adjustment.

INCOME TAXES

INCOME TAXES	12 Months Ended
	Dec. 31, 2015
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES Our consolidated federal and state income tax returns include the results of operations of acquired businesses from their dates of acquisition. A reconciliation of our effective income tax rate to the amounts calculated by applying the federal statutory corporate tax rate of 35% is as follows (in thousands): Years Ended December 31, 2015 2014 2013 Tax (benefit) expense at statutory rate $ (1,510 ) 35.0 % $ 8,306 35.0 % $ (5,987 ) 35.0 % Add (deduct): Rates different than statutory (165 ) 3.8 — — — — State income taxes (4,282 ) 99.2 2,797 11.8 1,037 (6.1 ) Nondeductible items 1,025 (23.7 ) 1,304 5.5 970 (5.7 ) Valuation allowance (29,519 ) 684.1 (9,752 ) (41.1 ) 495 (2.9 ) Unrecognized tax benefit 390 (9.0 ) 369 1.5 (3,732 ) 21.8 Derivatives and note discount — — (911 ) (3.8 ) 8,369 (48.9 ) Capital loss carryforward expiration 3,485 (80.8 ) — — — — Depletion (47 ) 1.1 — — — — Other 488 (11.3 ) 43 0.2 16 0.0 Income tax (benefit) expense from continuing operations $ (30,135 ) 698.4 % $ 2,156 9.1 % $ 1,168 (6.8 )% The amounts of our consolidated federal and state income tax (benefit) expense from continuing operations were as follows (in thousands): Years Ended December 31, 2015 2014 2013 Current: Federal $ 5,493 $ 487 $ 130 State 1,843 1,674 1,144 Foreign (43 ) — — 7,293 2,161 1,274 Deferred: Federal $ (29,712 ) $ (5 ) $ — State (7,779 ) — (106 ) Foreign 63 — — (37,428 ) (5 ) (106 ) Income tax (benefit) expense from continuing operations $ (30,135 ) $ 2,156 $ 1,168 Income tax (benefit) expense was allocated between continuing operations and discontinued operations as follows: Years Ended December 31, 2015 2014 2013 Continuing operations $ (30,135 ) $ 2,156 $ 1,168 Discontinued operations (180 ) 172 (45 ) Income tax (benefit) expense $ (30,315 ) $ 2,328 $ 1,123 Deferred income tax provisions result from temporary differences in the recognition of expenses for financial reporting purposes and for tax reporting purposes. We present the effects of those differences as deferred income tax liabilities and assets, as follows (in thousands): December 31, 2015 2014 Deferred tax assets: Derivatives $ 24,849 $ 8,463 Goodwill and other intangibles 4,165 6,747 Receivables 1,705 988 Inventory 4,114 4,264 Accrued insurance 5,170 4,021 Depletion 366 490 Deferred revenue 358 332 Stock compensation 769 986 Charitable contribution carryover — 166 Other accrued expenses 7,465 5,224 Capital loss carryforward expiration — 3,736 Net operating loss carryforwards 5,699 10,039 Other 2,024 1,507 Total gross deferred tax assets 56,684 46,963 Valuation allowance (4,131 ) (34,937 ) Net deferred tax assets 52,553 12,026 Deferred income tax liabilities: Property, plant and equipment, net 21,678 16,566 Total gross deferred tax liabilities 21,678 16,566 Net deferred tax asset (liability) $ 30,875 $ (4,540 ) The allocation of deferred taxes between current and long-term as of December 31, 2015 and 2014 was as follows (in thousands): December 31, 2015 2014 Current deferred tax asset, net $ — $ 1,887 Long-term deferred tax asset, net 30,875 — Long-term deferred tax liability, net — 6,427 Net deferred tax asset (liability) $ 30,875 $ (4,540 ) In accordance with U.S. GAAP, the recognized value of deferred tax assets must be reduced to the amount that is more likely than not to be realized in future periods. The ultimate realization of the benefit of deferred tax assets from deductible temporary differences or tax carryovers depends on the generation of sufficient taxable income during the periods in which those temporary differences become deductible. We considered the scheduled reversal of deferred tax liabilities, projected future taxable income, and tax planning strategies in making this assessment. Based on these considerations, we relied upon the reversal of certain deferred tax liabilities to realize a portion of our deferred tax assets and established valuation allowances as of December 31, 2015 and 2014 in the amount of $4.1 million and $34.9 million , respectively, for other deferred tax assets because of uncertainty regarding their ultimate realization. Our total net deferred tax asset as of December 31, 2015 was $30.9 million and our total net deferred tax liability as of December 31, 2014 was $4.5 million , respectively. As of each reporting date, management considers all new evidence, both positive and negative, that could impact management's view with regard to future realization of deferred tax assets. As of December 31, 2015 , we achieved a history of positive pre-tax income and anticipate significant additional future pre-tax income to be generated, in part from our recently acquired businesses, which will result in higher U.S. Federal taxable income. For these reasons, management determined that sufficient positive evidence existed as of December 31, 2015 to conclude that it is more likely than not that additional deferred taxes of $29.5 million are realizable, and therefore, reversed a majority of the valuation allowance accordingly. Under U.S. tax law, we have elected to treat our U.S. Virgin Island subsidiaries as controlled foreign corporations. As such, we consider the undistributed earnings of our U.S. Virgin Island subsidiaries as of December 31, 2015 to be indefinitely reinvested and, accordingly, no U.S. income taxes have been provided thereon. As of December 31, 2015 , the amount of cash associated with indefinitely reinvested foreign earnings was approximately $0.1 million . We have not, nor do we anticipate the need to, repatriate funds to the United States to satisfy domestic liquidity needs arising in the ordinary course of business, including liquidity needs associated with our domestic debt service requirements. We reorganized pursuant to Chapter 11 of the bankruptcy code under the terms of our plan of reorganization (the "Plan"), with an effective date of August 31, 2010. Under our Plan, our previously outstanding 8.375% Senior Subordinated Notes due 2014 were cancelled, giving rise to cancellation of indebtedness income ("CODI"). The Internal Revenue Code ("IRC"), provides that CODI arising under a plan of bankruptcy reorganization is excludable from taxable income, but the debtor must reduce certain of its tax attributes by the amount of CODI realized under the Plan. Based on the estimate of CODI and required tax attribute reduction, the effects of the Plan did not cause a significant change in our recorded net deferred tax liability. Our required reduction in tax attributes, or deferred tax assets, was accompanied by a corresponding release of valuation allowance in prior years. We underwent a change in ownership for purposes of Section 382 of the IRC as a result of our Plan and emergence from Chapter 11 on August 31, 2010. As a result, the amount of our pre-change net operating losses ("NOL's"), and other tax attributes that are available to offset future taxable income are subject to an annual limitation. The annual limitation is based on the value of the corporation as of the effective date of the Plan. As of December 31, 2015 , approximately $5.6 million of our federal NOL's are subject to annual Section 382 limitations. The ownership change and the resulting annual limitation on use of NOL's are not expected to result in the expiration of our NOL carryforwards if we are able to generate sufficient future taxable income within the carryforward periods. However, the limitation on the amount of NOL's available to offset taxable income in a specific year may result in the payment of income taxes before all NOL's have been utilized. At December 31, 2015 , we had unrecognized tax benefits of $4.1 million which, if recognized, would impact the effective tax rate. It is unlikely a reduction of unrecognized tax benefits will occur within the next 12 months. The unrecognized tax benefits are included as a component of other long-term obligations. During the years ended December 31, 2015 , 2014 and 2013, we recorded interest and penalties related to unrecognized tax benefits of $0.1 million , less than $0.1 million and $0.1 million , respectively, which are included in income tax (benefit) expense in our consolidated statement of operations. Total accrued penalties and interest at December 31, 2015 and 2014 was approximately $0.3 million and $0.2 million , respectively. A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in thousands): Years Ended December 31, 2015 2014 2013 Unrecognized tax benefits at January 1 $ 3,636 $ 3,489 $ 6,598 Additions for tax positions related to current year 464 475 311 Additions for tax positions related to prior years — 100 393 Reductions due to lapse of statute of limitations — (63 ) (3,813 ) Settlements — (365 ) — Unrecognized tax benefits at December 31 $ 4,100 $ 3,636 $ 3,489 We recognize interest and penalties related to uncertain tax positions in income tax expense. We conduct business domestically and, as a result, U.S. Concrete, Inc. or one or more of our subsidiaries file income tax returns in the U.S. federal jurisdiction and various state and local jurisdictions. In the normal course of business, we are subject to examination in the U.S. federal jurisdiction, and generally in state jurisdictions. With few exceptions, we are no longer subject to U.S. federal, state and local tax examinations for years before 2012.

STOCK-BASED COMPENSATION

STOCK-BASED COMPENSATION	12 Months Ended
	Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
STOCK-BASED COMPENSATION	STOCK-BASED COMPENSATION Management Equity Incentive Plan As of December 31, 2015, there were 0.9 million shares remaining for future issuance under the Long Term Incentive Plan (the "LTI Plan"). The LTI Plan enables us to grant stock options, stock appreciation rights, restricted stock awards, restricted stock units, cash awards and performance awards to management, employees, and directors of the Company. Stock-Based Compensation Under authoritative accounting guidance, share-based compensation cost is measured at the grant date based on the calculated fair value of the award. The expense is recognized on a straight-line basis over the employee’s requisite service period, generally the vesting period of the award or, for performance-based awards, over the derived service period. We have elected to use the long-form method of determining our pool of windfall tax benefits as prescribed under authoritative accounting guidance. For the years ended December 31, 2015 , 2014 , and 2013 , we recognized stock-based compensation expense related to restricted stock, restricted stock units and stock options of $5.8 million , $3.7 million , and $5.4 million , respectively, with a net tax-effected excess tax benefit recognized in 2015 in the amount of $5.0 million . There was no related excess tax benefit recognized in 2014 or 2013. Stock-based compensation expense is reflected in selling, general and administrative expenses in our consolidated statements of operations. As of December 31, 2015 , there was approximately $5.0 million of unrecognized compensation cost related to restricted stock units and restricted stock awards, net of estimated forfeitures. As of December 31, 2015, we expect to recognize the related compensation cost over a weighted-average period of approximately 1.0 year . Restricted Stock Units Restricted stock units generally vest over a one to three year period on a quarterly basis. The restricted stock units are subject to restrictions on transfer and certain conditions to vesting. During the restriction period, the holders of restricted stock units are not entitled to vote and receive dividends on those restricted units as the restricted stock units do not represent outstanding shares of our common stock. Restricted stock unit activity for the year ended December 31, 2015 was as follows (shares in thousands): Number Weighted- Unvested restricted stock units outstanding at beginning of period 22 $ 25.57 Granted 16 50.11 Vested (22 ) 25.57 Forfeited — — Unvested restricted stock units outstanding at end of period 16 $ 50.11 During 2015 , 2014 , and 2013 , the weighted-average grant date fair value of restricted stock units granted was $50.11 , $25.57 and $16.89 , respectively. The fair value of our restricted stock units was determined based upon the price of our common stock on the date of grant. During 2015 , 2014 , and 2013 , the total fair value of restricted stock units vested was $0.6 million , $0.6 million and $1.4 million , respectively. Compensation expense associated with awards of restricted stock units was $0.6 million , $0.6 million and $2.7 million for the years ended December 31, 2015 , 2014 , and 2013 , respectively. For restricted stock units that were granted prior to May 2013, there was an equivalent number of incentive restricted stock units, "IRSU's," issued. These IRSU's represented the right to receive 0.35020 of a share of common stock upon satisfaction of certain criteria. Compensation costs for 2013 associated with our restricted stock units included $1.2 million for achievement of the performance goal associated with delivery of a conversion event notice related to our Convertible Notes, which occurred on June 18, 2013, triggering the conversion of certain previously vested IRSU's into approximately 69,000 common shares. No compensation expense had previously been recognized for these grants, as achievement of the performance goal was not considered probable. Restricted Stock Awards Restricted stock awards are subject to restrictions on transfer and certain conditions to vesting. The restricted stock awards issued to date consist of a 60% time-vested component and a 40% stock performance hurdle component. The time-vested component vests annually over a two or three year period. The stock performance hurdle component triggers vesting upon our stock price reaching certain thresholds. During the restriction period, the holders of restricted stock are entitled to vote and receive dividends, thus these awards are included in our outstanding shares of common stock. Restricted stock award activity for the year ended December 31, 2015 was as follows (shares in thousands): Number Weighted- Unvested restricted stock awards outstanding at beginning of period 434 $ 13.30 Granted 219 30.50 Vested (418 ) 14.06 Forfeited (19 ) 27.64 Unvested restricted stock awards outstanding at end of period 216 $ 28.75 During 2015 , 2014 , and 2013 , the weighted-average grant date fair value of restricted stock awards granted was $30.50 , $21.11 and $11.55 , respectively. The fair value of restricted stock awards subject only to time-vesting restrictions was determined based upon the price of our common stock on the date of grant. The fair value of restricted stock subject to our common stock reaching certain price thresholds was determined utilizing a Monte Carlo financial valuation model which is appropriate for path-dependent options. Compensation expense determined utilizing the Monte Carlo simulation is recognized regardless of whether the common stock reaches the defined thresholds. The range of assumptions used to estimate the fair value of performance-based restricted stock awards granted during the years ended December 31, 2015, 2014, and 2013 were as follows: Years Ended December 31, 2015 2014 2013 Expected term (years) 0.70 - 1.00 0.08 - 1.08 0.17 - 1.17 Expected volatility 36.7% 38.6% - 42.6% 41.3% - 43.3% Risk-free interest rate 0.93% 0.87% - 1.17% 0.38% - 0.68% Weighted-average grant date fair value $21.47 - $24.94 $14.18 - $26.42 $5.51 - $16.32 During 2015 , 2014 , and 2013 , the total fair value of restricted stock awards vested was $5.9 million , $1.5 million and $3.0 million , respectively. Compensation expense associated with restricted stock awards under our incentive compensation plan was $5.2 million , $3.1 million and $2.7 million for the years ended December 31, 2015 , 2014 , and 2013 , respectively. During 2015, we modified the terms of certain of our restricted stock awards issued during 2015, 2014, and 2013, resulting in the accelerated vesting of the time-vested component. The incremental compensation expense associated with the modification of these restricted stock awards was $0.2 million for 2015. Stock Options Proceeds from the exercise of stock options are credited to common stock at par value, and the excess is credited to additional paid-in capital. We estimated the fair value of each of our stock option awards on the date of grant using a Black-Scholes option pricing model. We determined the expected volatility using the historical and implied volatilities of a peer group of companies given the limited trading history of our common stock at the time. For each option awarded, the risk-free interest rate was based on the U.S. Treasury yield in effect at the time of grant for periods corresponding with the expected life of the option. The expected life of an option represents the weighted average period of time that an option grant is expected to be outstanding, giving consideration to its vesting schedule and historical exercise patterns. There were no stock option grants in 2015 , 2014 or 2013 . Options outstanding at December 31, 2015 relate to grants prior to 2013. Compensation expense related to stock options was less than $0.1 million during the years ended December 31, 2014 and 2013 . There was no compensation expense related to stock options for the year ended December 31, 2015 . Stock option activity for the year ended December 31, 2015 was as follows (shares in thousands): Number Weighted- Options outstanding at beginning of year 46 $ 18.46 Granted — — Exercised (15 ) 20.84 Forfeited and expired — — Options outstanding at end of year 31 $ 17.32 Options exercisable at end of year 31 $ 17.32 The total intrinsic value of stock options exercised during the years ended December 31, 2015 , 2014 , and 2013 was $0.5 million , $0.2 million , and $0.1 million , respectively. The following table summarizes information about stock options outstanding as of December 31, 2015 (shares in thousands): Options Outstanding Options Exercisable Range of exercise prices Number of Shares Outstanding Weighted Average Remaining Contractual Life Weighted Average Exercise Price Number of Shares Outstanding Weighted Average Exercise Price $12.00 - $12.00 10 4.51 $ 12.00 10 $ 12.00 $15.00 - $15.00 11 4.52 15.00 11 15.00 $22.69 - $22.69 5 4.52 22.69 5 22.69 $26.68 - $26.68 5 4.52 26.68 5 26.68 $12.00 - $26.68 31 4.52 $ 17.32 31 $ 17.32 The aggregate intrinsic value of outstanding and exercisable stock options was $1.1 million , $0.5 million , and $0.5 million at December 31, 2015 , 2014 , and 2013 , respectively.

NET EARNINGS (LOSS) PER SHARE

NET EARNINGS (LOSS) PER SHARE	12 Months Ended
	Dec. 31, 2015
Earnings Per Share [Abstract]
NET EARNINGS (LOSS) PER SHARE	NET EARNINGS (LOSS) PER SHARE Basic earnings (loss) per share is computed by dividing net earnings (loss) by the weighted average number of common shares outstanding during the period. Diluted earnings (loss) per share is computed by dividing net earnings (loss) by the weighted average number of common shares outstanding during the period after giving effect to all potentially dilutive securities outstanding during the period. The following is a reconciliation of the components of the basic and diluted earnings per share calculations for the years ended December 31, 2015 and 2014 , in thousands: Years Ended December 31, 2015 2014 Numerator: Income from continuing operations $ 25,820 $ 21,575 Loss from discontinued operations, net of taxes (320 ) (993 ) Numerator for basic and diluted earnings per share $ 25,500 $ 20,582 Denominator: Basic weighted average common shares outstanding 14,080 13,541 Restricted stock and restricted stock units 170 210 Warrants 1,295 136 Stock options 15 11 Denominator for diluted earnings per share 15,560 13,898 We have not included a reconciliation of the components of the basic and diluted earnings per share calculations for the year ended December 31, 2013 as we reported losses from continuing and discontinued operations in the accompanying consolidated statements of operations for that year, and thus the share count used in the basic and diluted calculation is the same. For the year ended December 31, 2015, there were no potentially dilutive shares excluded from the calculation of diluted earnings (loss) per share. For the years ended December 31, 2014 , and 2013 , our potentially dilutive shares excluded from the calculation of diluted earnings (loss) per share included shares underlying our restricted stock awards, restricted stock units, stock options, and Warrants. For the year ended December 31, 2013 , our potentially dilutive shares also included the shares underlying our Convertible Notes. The following table shows the type and number (in thousands) of potentially dilutive shares excluded from the diluted earnings (loss) per share calculations for the periods presented as their effect would have been anti-dilutive or they have not met their performance target: Years Ended December 31, 2014 2013 Potentially dilutive shares: Convertible Notes — 349 Unvested restricted stock awards and restricted stock units 84 516 Stock options 14 80 Warrants 1,500 3,000 Total potentially dilutive shares 1,598 3,945

BUSINESS SEGMENTS

BUSINESS SEGMENTS	12 Months Ended
	Dec. 31, 2015
Segment Reporting [Abstract]
BUSINESS SEGMENTS	BUSINESS SEGMENTS Our two reportable segments consist of ready-mixed concrete and aggregate products, as described below. Our ready-mixed concrete segment produces and sells ready-mixed concrete. This segment serves the following principal markets: Texas, northern California, New York, New Jersey, Washington, D.C., and Oklahoma. With the acquisition of the ready-mixed concrete businesses during the fourth quarter of 2015 (see Note 2), we have further expanded our ready-mixed concrete segment to serve the U.S Virgin Islands market. Our aggregate products segment includes crushed stone, sand and gravel products and serves the north and west Texas, New York, and New Jersey markets in which our ready-mixed concrete segment operates. With the acquisition of sand and gravel operations during the third quarter of 2015 (see Note 2), we have expanded our aggregate products segment to serve the southern Oklahoma market. Further, with the Heavy acquisition during the fourth quarter of 2015 (see Note 2), we have expanded our aggregates products segment to serve the U.S. Virgin Islands market. Other products not associated with a reportable segment include our building materials stores, hauling operations, lime slurry, ARIDUS ® Rapid Drying Concrete technology, brokered product sales, a recycled aggregates operation, an aggregates distribution operation, and an industrial waterfront marine terminal and sales yard. The financial results of the acquisitions completed in 2015 , 2014 , and 2013 have been included in their respective reportable segment or in other products as of their respective acquisition dates. Our customers are generally involved in the construction industry, which is a cyclical business and is subject to general and more localized economic conditions. In addition, our business is impacted by seasonal variations in weather conditions, which vary by regional market. Accordingly, demand for our products and services during the winter months are typically lower than in other months of the year because of inclement weather. Also, sustained periods of inclement weather and other adverse weather conditions could cause the delay of construction projects during other times of the year. Our chief operating decision maker evaluates segment performance and allocates resources based on Adjusted EBITDA. We define Adjusted EBITDA as net income (loss) from continuing operations excluding interest, income taxes, depreciation, depletion and amortization, derivative gain (loss), gain or loss on revaluation of contingent consideration, and gain or loss on extinguishment of debt. Additionally, we adjust Adjusted EBITDA for items similar to certain of those used in calculating the Company’s compliance with debt covenants. The additional items that are adjusted to determine our Adjusted EBITDA are: • non-cash stock compensation expense; • acquisition-related professional fees; and • corporate officer severance expense. We consider Adjusted EBITDA to be an indicator of the operational strength and performance of our business. We have included Adjusted EBITDA because it is a key financial measure used by our management to (i) internally measure our operating performance and (ii) assess our ability to service our debt, incur additional debt and meet our capital expenditure requirements. Adjusted EBITDA should not be construed as an alternative to, or a better indicator of, net income or loss, is not based on U.S. GAAP, and is not necessarily a measure of our cash flows or ability to fund our cash needs. Our measurements of Adjusted EBITDA may not be comparable to similarly titled measures reported by other companies. We account for inter-segment sales at market prices. Corporate includes executive, administrative, financial, legal, human resources, business development and risk management activities which are not allocated to reportable segments and are excluded from segment Adjusted EBITDA. Eliminations include transactions to account for intercompany activity. In January 2014, our Board approved of the sale of our one remaining precast operation in Pennsylvania. Historical segment results have been recast to conform to this change. The following tables set forth certain financial information relating to our continuing operations by reportable segment (in thousands): Years ended December 31, 2015 2014 2013 Revenue: Ready-mixed concrete Sales to external customers $ 876,633 $ 632,787 $ 545,302 Aggregate products Sales to external customers 34,191 31,662 21,715 Intersegment sales 26,248 20,956 16,498 Total aggregate products 60,439 52,618 38,213 Total reportable segment revenue 937,072 685,405 583,515 Other products and eliminations 37,645 18,309 14,640 Total revenue $ 974,717 $ 703,714 $ 598,155 Reportable Segment Adjusted EBITDA: Ready-mixed concrete $ 131,940 $ 84,706 $ 58,583 Aggregate products 14,996 10,549 7,192 Total reportable segment Adjusted EBITDA $ 146,936 $ 95,255 $ 65,775 Reconciliation of reportable segment Adjusted EBITDA to income (loss) from continuing operations before income taxes: Total reportable segment Adjusted EBITDA $ 146,936 $ 95,255 $ 65,775 Other products and eliminations income from operations 8,704 3,082 2,615 Corporate overhead, net of insurance allocations (39,012 ) (30,870 ) (29,957 ) Depreciation, depletion and amortization for reportable segments (38,767 ) (20,362 ) (15,777 ) Interest expense, net (21,734 ) (20,431 ) (11,332 ) Corporate gain on early extinguishment of debt — 11 985 Corporate derivative loss (60,016 ) (3,556 ) (29,964 ) Loss on revaluation of contingent consideration (932 ) — — Corporate, other products and eliminations other income, net 506 602 550 (Loss) income from continuing operations before income taxes $ (4,315 ) $ 23,731 $ (17,105 ) Capital Expenditures: Ready-mixed concrete $ 12,321 $ 21,754 $ 12,236 Aggregate products 7,859 9,128 5,773 Other 4,797 1,685 1,979 Total capital expenditures $ 24,977 $ 32,567 $ 19,988 Revenue by Product: Ready-mixed concrete $ 876,633 $ 632,787 $ 545,302 Aggregate products 34,191 31,662 21,715 Aggregate distribution 28,393 4,892 — Building materials 17,533 15,410 14,656 Lime 9,250 10,459 7,356 Hauling 5,425 4,221 4,533 Other 3,292 4,283 4,593 Total revenue $ 974,717 $ 703,714 $ 598,155 As of December 31, 2015 2014 2013 Identifiable Assets: Ready-mixed concrete and concrete-related products $ 166,837 $ 126,141 $ 91,776 Aggregate products 65,937 40,878 36,819 Other products and corporate 15,349 9,505 9,965 Total identifiable assets $ 248,123 $ 176,524 $ 138,560

RISK CONCENTRATION

RISK CONCENTRATION	12 Months Ended
	Dec. 31, 2015
Risks and Uncertainties [Abstract]
RISK CONCENTRATION	RISK CONCENTRATION We grant credit, generally without collateral, to our customers, which include general contractors, municipalities and commercial companies located primarily in Texas, northern California, New Jersey, New York, Pennsylvania, Washington D.C., Oklahoma, and the U.S. Virgin Islands. Consequently, we are subject to potential credit risk related to changes in business and economic factors in those states and territories. We generally have lien rights in the work we perform, and concentrations of credit risk are limited because of the diversity of our customer base. Further, our management believes that our contract acceptance, billing and collection policies are adequate to limit potential credit risk. Several of our subsidiaries are parties to various collective bargaining agreements with labor unions having multi-year terms. As of December 31, 2015 , approximately 976 of our employees, or 36.1% of our workforce, were represented by labor unions having collective bargaining agreements with us. Generally, these agreements have multi-year terms and expire on a staggered basis between 2016 and 2019. As of December 31, 2014 , approximately 617 of our employees, or 28.8% of our workforce, were represented by agreements that expire on a staggered basis between 2015 and 2019. SIGNIFICANT CUSTOMERS AND SUPPLIERS We did not have any customers that accounted for more than 10% of our revenues or any suppliers that accounted for more than 10% of our cost of goods sold in 2015 , 2014 or 2013 . We did not have any customers that accounted for more than 10% of our accounts receivable as of December 31, 2015 or December 31, 2014 .

SIGNIFICANT CUSTOMERS AND SUPPL

SIGNIFICANT CUSTOMERS AND SUPPLIERS	12 Months Ended
	Dec. 31, 2015
Segment Reporting [Abstract]
SIGNIFICANT CUSTOMERS AND SUPPLIERS	RISK CONCENTRATION We grant credit, generally without collateral, to our customers, which include general contractors, municipalities and commercial companies located primarily in Texas, northern California, New Jersey, New York, Pennsylvania, Washington D.C., Oklahoma, and the U.S. Virgin Islands. Consequently, we are subject to potential credit risk related to changes in business and economic factors in those states and territories. We generally have lien rights in the work we perform, and concentrations of credit risk are limited because of the diversity of our customer base. Further, our management believes that our contract acceptance, billing and collection policies are adequate to limit potential credit risk. Several of our subsidiaries are parties to various collective bargaining agreements with labor unions having multi-year terms. As of December 31, 2015 , approximately 976 of our employees, or 36.1% of our workforce, were represented by labor unions having collective bargaining agreements with us. Generally, these agreements have multi-year terms and expire on a staggered basis between 2016 and 2019. As of December 31, 2014 , approximately 617 of our employees, or 28.8% of our workforce, were represented by agreements that expire on a staggered basis between 2015 and 2019. SIGNIFICANT CUSTOMERS AND SUPPLIERS We did not have any customers that accounted for more than 10% of our revenues or any suppliers that accounted for more than 10% of our cost of goods sold in 2015 , 2014 or 2013 . We did not have any customers that accounted for more than 10% of our accounts receivable as of December 31, 2015 or December 31, 2014 .

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	12 Months Ended
	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES Legal Proceedings From time to time, and currently, we are subject to various claims and litigation brought by employees, customers and other third parties for, among other matters, personal injuries, property damages, product defects and delay damages that have, or allegedly have, resulted from the conduct of our operations. As a result of these types of claims and litigation, we must periodically evaluate the probability of damages being assessed against us and the range of possible outcomes. In each reporting period, if we determine that the likelihood of damages being assessed against us is probable, and, if we believe we can estimate a range of possible outcomes, then we will record a liability. The amount of the liability will be based upon a specific estimate, if we believe a specific estimate to be likely, or it will reflect the low end of our range. Currently, there are no material legal proceedings pending against us. In the future, we may receive funding deficiency demands related to multi-employer pension plans to which we contribute. We are unable to estimate the amount of any potential future funding deficiency demands because the actions of each of the other contributing employers in the plans has an effect on each of the other contributing employers, and the development of a rehabilitation plan by the trustees and subsequent submittal to and approval by the Internal Revenue Service is not predictable. Further, the allocation of fund assets and return assumptions by trustees are variable, as are actual investment returns relative to the plan assumptions. As of March 3, 2016 , there are no material product defect claims pending against us. Accordingly, our existing accruals for claims against us do not reflect any material amounts relating to product defect claims. While our management is not aware of any facts that would reasonably be expected to lead to material product defect claims against us that would have a material adverse effect on our business, financial condition or results of operations, it is possible that claims could be asserted against us in the future. We do not maintain insurance that would cover all damages resulting from product defect claims. In particular, we generally do not maintain insurance coverage for the cost of removing and rebuilding structures. In addition, our indemnification arrangements with contractors or others, when obtained, generally provide only limited protection against product defect claims. Due to inherent uncertainties associated with estimating unasserted claims in our business, we cannot estimate the amount of any future loss that may be attributable to unasserted product defect claims related to ready-mixed concrete we have delivered prior to December 31, 2015 . We believe that the resolution of all litigation currently pending or threatened against us or any of our subsidiaries will not materially exceed our existing accruals for those matters. However, because of the inherent uncertainty of litigation, there is a risk that we may have to increase our accruals for one or more claims or proceedings to which we or any of our subsidiaries is a party as more information becomes available or proceedings progress, and any such increase in accruals could have a material adverse effect on our consolidated financial condition or results of operations. We expect in the future that we and our operating subsidiaries will, from time to time, be a party to litigation or administrative proceedings that arise in the normal course of our business. We are subject to federal, state and local environmental laws and regulations concerning, among other matters, air emissions and wastewater discharge. Our management believes we are in substantial compliance with applicable environmental laws and regulations. From time to time, we receive claims from federal and state environmental regulatory agencies and entities asserting that we may be in violation of environmental laws and regulations. Based on experience and the information currently available, our management does not believe that these claims will materially exceed our related accruals. Despite compliance and experience, it is possible that we could be held liable for future charges, which might be material, but are not currently known to us or cannot be estimated by us. In addition, changes in federal or state laws, regulations or requirements, or discovery of currently unknown conditions, could require additional expenditures. As permitted under Delaware law, we have agreements that provide indemnification of officers and directors for certain events or occurrences while the officer or director is or was serving at our request in such capacity. The maximum potential amount of future payments that we could be required to make under these indemnification agreements is not limited; however, we have a director and officer insurance policy that potentially limits our exposure and enables us to recover a portion of future amounts that may be paid. As a result of the insurance policy coverage, we believe the estimated fair value of these indemnification agreements is minimal. Accordingly, we have not recorded any liabilities for these agreements as of December 31, 2015 . We and our subsidiaries are parties to agreements that require us to provide indemnification in certain instances when we acquire businesses and real estate and in the ordinary course of business with our customers, suppliers, lessors and service providers. Lease Payments We lease certain mobile and other equipment, land, facilities, office space and other items which, in the normal course of business, are renewed or replaced by subsequent leases. Total consolidated expense for such operating leases amounted to $17.4 million in 2015 , $11.9 million in 2014 , and $11.2 million in 2013 . Future minimum rental payments with respect to our operating lease obligations as of December 31, 2015 , are as follows (in thousands): Year Ending December 31, 2016 $ 13,529 2017 12,575 2018 10,575 2019 7,446 2020 3,288 Thereafter 18,157 $ 65,570 Our annual lease expense differs from our future minimum rental payments as a result of month to month equipment leases to support our operations. Insurance Programs We maintain third-party insurance coverage against certain risks. Under certain components of our insurance program, we share the risk of loss with our insurance underwriters by maintaining high deductibles subject to aggregate annual loss limitations. Generally, our deductible retentions per occurrence for auto, workers’ compensation and general liability insurance programs are $1.0 million , although certain of our operations are self-insured for workers’ compensation. We fund these deductibles and record an expense for expected losses under the programs. The expected losses are determined using a combination of our historical loss experience and subjective assessments of our future loss exposure. The estimated losses are subject to uncertainty from various sources, including changes in claims reporting patterns, claims settlement patterns, judicial decisions, legislation and economic conditions. Although we believe that the estimated losses we have recorded are reasonable, significant differences related to the items noted above could materially affect our insurance obligations and future expense. The amount accrued for self-insurance claims was $12.0 million as of December 31, 2015 , compared to $9.5 million as of December 31, 2014 , which is recorded in accrued liabilities. Performance Bonds In the normal course of business, we and our subsidiaries are contingently liable for performance under $16.4 million in performance bonds that various contractors, states and municipalities have required as of December 31, 2015 . The bonds principally relate to construction contracts, reclamation obligations and licensing and permitting. We and our subsidiaries have indemnified the underwriting insurance company against any exposure under the performance bonds. No material claims have been made against these bonds.

EMPLOYEE BENEFIT PLANS AND MULT

EMPLOYEE BENEFIT PLANS AND MULTI-EMPLOYER PENSION PLANS	12 Months Ended
	Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]
EMPLOYEE BENEFIT PLANS AND MULTI-EMPLOYER PENSION PLANS	EMPLOYEE BENEFIT PLANS AND MULTI-EMPLOYER PENSION PLANS Defined Contribution 401(k) Plan We maintain a defined contribution 401(k) profit sharing plan for employees meeting various employment requirements. Eligible employees may contribute amounts up to the lesser of 60% of their annual compensation or the maximum amount IRS regulations permit. During 2015 , we matched 100% of the first 4% of employee contributions. During 2014 , we matched 100% of the first 1% of employee contributions and 50% of the next 5% of employee contributions. During 2013 , we matched 50% of employee contributions up to a maximum of 6% of their compensation. We paid matching contributions of $2.9 million in 2015, $1.5 million in 2014 , and $1.0 million in 2013 . Multi-Employer Pension Plans Several of our subsidiaries are parties to various collective bargaining agreements with labor unions having multi-year terms that expire on a staggered basis. Under these agreements, our applicable subsidiaries pay specified wages to covered employees, observe designated workplace rules and make payments to multi-employer pension plans and employee benefit trusts rather than administering the funds on behalf of these employees. The risks of participating in these multi-employer pension plans are different from single-employer plans. Assets contributed to the multi-employer plan by one employer may be used to provide benefits to employees of other participating employers. If a participating employer stops contributing to the plan, the unfunded obligations of the plan may be borne by the remaining participating employers. If we choose to stop participating in some of these multi-employer plans, we may be required to pay those plans an amount based on the underfunded status of the plan, referred to as a withdrawal liability. We were not required to record a liability in fiscal 2015 or 2014 for full and partial withdrawals from any multi-employer pension plans. For additional information regarding our potential future obligations, see Note 22. The required disclosures and our participation in significant multi-employer pension plans are presented in the table below. The EIN / Pension Plan Number column provides the Employer Identification Number (“EIN”) and the three-digit plan number, if applicable. The Pension Protection Act zone status is based on information available from the plan or the plan’s public filings. Among other factors, plans in the red zone are generally less than 65% funded, plans in the orange or yellow zones are less than 80% funded, and plans in the green zone are at least 80% funded. The FIP / RP Status Pending / Implemented column indicates plans for which a financial improvement plan (“FIP”) or a rehabilitation plan (“RP”) is either pending or has been implemented. The last column lists the expiration date(s) of the collective-bargaining agreements to which the plans are subject. Our contributions did not represent more than 5% of total contributions to any of the significant plans shown below. Pension Fund EIN / PPN Pension FIP / RP Contributions Surcharge Expiration 2014 and 2015 2013 2015 2014 2013 Western Conference of Teamsters Pension Plan 91-6145047/001 Green Green No $ 4,357 $ 3,568 $ 3,204 No 6/30/2016 to 8/31/2018 Operating Engineers Pension Trust Fund 94-6090764/001 Orange Orange Yes 1,173 933 837 No 7/1/2017 Local 282 Pension Trust Fund 11-6245313/001 Green Green No 829 819 650 No 6/30/2016 Trucking Employees of North Jersey Pension Fund 22-6063702/001 Red Red Yes 615 559 513 No 4/30/2018 Pension Fund Local 445 13-1864489/001 Green Yellow Yes 200 184 193 No 6/30/2017 Operating Engineers 825 Pension Fund 22-6033380/001 Green Orange Yes 178 161 151 Yes 3/31/2016 to 3/31/2019 Automotive Industries Pension Plan 94-1133245/001 Red Red Yes 102 179 180 No 7/31/2016 Other Various Various Various Various 604 540 495 Various 6/30/2016 to $ 8,058 $ 6,943 $ 6,223 Contributions to the Western Conference of Teamsters Pension Plan increased from 2014 to 2015 due primarily to the impact of employees added as part of the Right Away acquisition during 2015. At the date that these consolidated financial statements were issued, Forms 5500 were generally not available for the plan year ending in 2015 .

QUARTERLY SUMMARY (unaudited)

QUARTERLY SUMMARY (unaudited)	12 Months Ended
	Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
QUARTERLY SUMMARY (unaudited)	QUARTERLY SUMMARY (unaudited) Year Ended December 31, 2015 (in thousands, except per share data) First Second Third Fourth Revenue - continuing operations $ 171,338 $ 244,695 $ 295,111 $ 263,573 Net (loss) income $ (10,484 ) $ 9,703 $ 1,619 $ 24,662 Net (loss) income per share-basic $ (0.77 ) $ 0.69 $ 0.11 $ 1.70 Net (loss) income per share-diluted $ (0.77 ) $ 0.64 $ 0.10 $ 1.53 Year Ended December 31, 2014 (in thousands, except per share data) First Second Third Fourth Revenue - continuing operations $ 146,257 $ 180,358 $ 197,589 $ 179,510 Net (loss) income $ (1,153 ) $ 7,861 $ 13,007 $ 867 Net (loss) income per share-basic $ (0.09 ) $ 0.58 $ 0.96 $ 0.06 Net (loss) income per share-diluted $ (0.09 ) $ 0.57 $ 0.94 $ 0.06 Our customers are generally involved in the construction industry, which is a cyclical business and is subject to general and more localized economic conditions. In addition, our business is impacted by seasonal variations in weather conditions, which vary by regional market. Accordingly, demand for our products and services during the winter months are typically lower than in other months of the year because of inclement weather. Also, sustained periods of inclement weather and other adverse weather conditions could cause the delay of construction projects during other times of the year.

SUBSEQUENT EVENT

SUBSEQUENT EVENT	12 Months Ended
	Dec. 31, 2015
Subsequent Events [Abstract]
Subsequent Event	SUBSEQUENT EVENT On February 29, 2016, we completed the acquisition of all the assets of Greco Brothers Concrete of L.I., Inc. ("Greco"), in Brooklyn, New York. The purchase price was $15.8 million in cash, plus closing adjustments of $0.9 million . We funded the purchase through a combination of cash on hand and borrowings under our Revolving Facility. Greco operates two ready-mixed concrete plants and a fleet of 37 mixer trucks. The Greco acquisition further expands our ready-mixed concrete operations in our existing New York market. We will prepare the preliminary purchase price allocation for this acquisition as soon as practical, but no later than one year from the acquisition date.

ORGANIZATION AND SUMMARY OF S32

ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The consolidated financial statements consist of the accounts of U.S. Concrete, Inc. and its wholly owned subsidiaries. All significant intercompany account balances and transactions have been eliminated.
Business Combinations	Business Combinations We have acquired a number of businesses in recent years. We record the operating results of our acquired businesses in our consolidated statements of operations from the date of acquisition. Acquisitions are accounted for using the purchase method of accounting in accordance with Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") 805 "Business Combinations." We allocate the purchase price to the assets acquired, including identifiable intangible assets, liabilities assumed, and contingent consideration obligations based on their estimated fair value on the date of the acquisition. These allocations require the significant use of estimates and are based on information that was available to management at the time these consolidated financial statements were prepared. We utilized recognized valuation techniques, including the income approach, sales approach, and cost approach to value the net assets acquired. The excess of the purchase price over the fair value of the net assets acquired is recorded as goodwill. Final valuations of assets and liabilities are obtained and recorded within one year from the date of the acquisition. See Note 13 for additional information regarding valuation of contingent consideration.
Assets and Liabilities Held for Sale	Assets and Liabilities Held for Sale We classify long-lived assets (disposal groups) to be sold as held for sale in the period in which all of the following criteria are met: management, having the authority to approve the action, commits to a plan to sell the asset (disposal group); the asset (disposal group) is available for immediate sale in its present condition subject only to terms that are usual and customary for sales of such assets (disposal groups); an active program to locate a buyer and other actions required to complete the plan to sell the asset (disposal group) have been initiated; the sale of the asset (disposal group) is probable, and transfer of the asset (disposal group) is expected to qualify for recognition as a completed sale within one year, except if events or circumstances beyond our control extend the period of time required to sell the asset (disposal group) beyond one year; the asset (disposal group) is being actively marketed for sale at a price that is reasonable in relation to its current fair value; and actions required to complete the plan indicate that it is unlikely that significant changes to the plan will be made or that the plan will be withdrawn. We initially measure a long-lived asset (disposal group) that is classified as held for sale at the lower of its carrying value or fair value less any costs to sell. Any loss resulting from this measurement is recognized in the period in which the held-for-sale criteria are met. Conversely, gains are not recognized on the sale of a long-lived asset (disposal group) until the date of sale. We assess the fair value of a long-lived asset (disposal group) less any costs to sell each reporting period it remains classified as held for sale and report any subsequent changes as an adjustment to the carrying value of the asset (disposal group), as long as the new carrying value does not exceed the carrying value of the asset at the time it was initially classified as held for sale. Upon determining that a long-lived asset meets the criteria to be classified as held for sale, we report the assets and liabilities of the disposal group, if material, in the line items assets held for sale and liabilities held for sale, respectively, in our consolidated balance sheets.
Cash and Cash Equivalents	Cash and Cash Equivalents We record as cash equivalents all highly liquid investments having maturities of three months or less at the original date of purchase. Our cash equivalents may include money market accounts, certificates of deposit and commercial paper of highly rated corporate or government issuers. We classify our cash equivalents as held-to-maturity. Cash equivalents are stated at cost plus accrued interest, which approximates market value. The maximum amount placed in any one financial institution is limited in order to reduce risk. At times, our investments may be in excess of amounts insured by the Federal Deposit Insurance Corporation. We have not experienced any losses on these accounts. Cash held as collateral or escrowed for contingent liabilities is included in other current and noncurrent assets based on the expected release date of the underlying obligation.
Accounts Receivable	Accounts Receivable Accounts receivables are reported net of allowance for doubtful accounts and customer disputes. We maintain an allowance for accounts receivable that we believe may not be collected in full. A provision for bad debt expense recorded to selling, general and administrative expenses increases the allowance. A provision for customer disputes recorded as a reduction to revenue also increases the allowance. Accounts receivable are written off when we determine the receivable will not be collected. Accounts receivable that we write off our books decrease the allowance. We determine the amount of bad debt expense and customer dispute losses we record each period and the resulting adequacy of the allowance at the end of each period by using a combination of historical loss experience, a customer-by-customer analysis of our accounts receivable balances each period, and subjective assessments of our loss exposure.
Inventories	Inventories Inventories consist primarily of cement and other raw materials, aggregates at our pits and quarries, and building materials that we hold for sale or use in the ordinary course of business. Inventories are stated at the lower of cost or fair market value using the average cost and first-in, first-out methods. We reduce the carrying value of our inventories for estimated excess and obsolete inventories equal to the difference between the cost of inventory and its estimated realizable value based upon assumptions about future product demand and market conditions. Once the new cost basis is established, the value is not increased with any changes in circumstances that would indicate an increase after the remeasurement. If actual product demand or market conditions are less favorable than those projected by management, inventory write-downs may be required that could result in a material change to our consolidated results of operations or financial position.
Prepaid Expenses	Prepaid Expenses Prepaid expenses primarily include amounts we have paid for insurance, licenses, taxes, rent, and maintenance contracts. We expense or amortize all prepaid amounts as used or over the period of benefit, as applicable.
Property, Plant and Equipment, Net	Property, Plant and Equipment, Net We state property, plant and equipment at cost and use the straight-line method to compute depreciation of these assets other than mineral deposits over the following estimated useful lives: buildings and land improvements, from 10 to 40 years; machinery and equipment, from 10 to 30 years; mixers, trucks and other vehicles, from one to 12 years; and other, from three to 10 years. We capitalize leasehold improvements on properties held under operating leases and amortize those costs over the lesser of their estimated useful lives or the applicable lease term. We compute depletion of mineral deposits as such deposits are extracted utilizing the unit-of-production method. We expense maintenance and repair costs when incurred and capitalize and depreciate expenditures for major renewals and betterments that extend the useful lives of our existing assets. When we retire or dispose of property, plant or equipment, we remove the related cost and accumulated depreciation from our accounts and reflect any resulting gain or loss in our consolidated statements of operations.
Impairment of Long-lived assets	Impairment of Long-lived assets We evaluate the recoverability of our long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets is measured by comparing the carrying amount of an asset to future undiscounted net cash flows expected to be generated by the asset. Such evaluations for impairment are significantly impacted by estimates of future prices for our products, capital needs, economic trends in the applicable construction sector and other factors. If we consider such assets to be impaired, the impairment we recognize is measured by the amount by which the carrying amount of the assets exceeds their fair value. Assets to be disposed of by sale are reflected at the lower of their carrying amounts, or fair values, less cost to sell. We test for impairment using a multi-tiered approach that incorporates an equal weighting to a multiple of earnings and an equal weighting to undiscounted estimated future cash flows.
Intangible Assets Including Goodwill	Intangible Assets Including Goodwill We amortize identifiable intangible assets with finite lives over their estimated useful lives using a straight-line approach. We record as goodwill the amount by which the total purchase price we have paid for acquisitions exceeds our estimated fair value of the net tangible and identifiable intangible assets acquired. We do not amortize goodwill but instead evaluate it for impairment within the reporting unit on an annual basis, or more often if events or circumstances indicate that there may be impairment. We generally test for intangible asset impairment in the fourth quarter of each year, because this period gives us the best visibility of the reporting units’ operating performances for the current year (seasonally, April through October are our highest revenue and production months), and our outlook for the upcoming year, since much of our customer base is finalizing operating and capital budgets during the fourth quarter. The impairment test we use involves estimating the fair value of our reporting units and comparing the result to the reporting unit's carrying value. We estimate fair value using an equally weighted combination of discounted cash flows and multiples of invested capital to EBITDA. The discounted cash flow model includes forecasts for revenue and cash flows discounted at our weighted average cost of capital. Multiples of invested capital to EBITDA are calculated using a weighted average of two selected 12 month periods results by reporting unit compared to the enterprise value of the Company, which is determined based on the combination of the market value of our capital stock and total outstanding debt. If the fair value exceeds the carrying value, the second step is not performed and no impairment is recorded. If however, the fair value is below the carrying value, a second step is performed to calculate the amount of the impairment by measuring the goodwill at an implied fair value. See Note 4 for further discussion of our goodwill and purchased intangible assets.
Debt Issue Costs	Debt Issue Costs We amortize debt issue costs related to our $250.0 million asset-based revolving credit facility (the "Revolving Facility"), our 8.5% Senior Secured Notes due 2018 (the "2018 Notes"), and our 9.5% Convertible Secured Notes due 2015 (the "Convertible Notes") as interest expense over the scheduled maturity period of the debt. Unamortized debt issuance costs were $6.1 million and $6.8 million as of December 31, 2015 and 2014 , respectively. We include unamortized debt issuance costs in other assets. See Note 9 for additional information regarding our debt, and Note 10 regarding our extinguishment of debt during 2013.
Revenue and Expenses	Revenue and Expenses We derive substantially all of our revenue from the production and delivery of ready-mixed concrete, aggregates, and related building materials. We recognize revenue, net of sales tax, when products are delivered, selling price is fixed or determinable, persuasive evidence of an arrangement exists, and collection is reasonably assured. Amounts billed to customers for delivery costs are classified as a component of total revenues and the related delivery costs (excluding depreciation) are classified as a component of total cost of goods sold. Cost of goods sold consists primarily of product costs and operating expenses (excluding depreciation, depletion and amortization). Operating expenses consist primarily of wages, benefits, insurance and other expenses attributable to plant operations, repairs and maintenance, and delivery costs. Selling expenses consist primarily of sales commissions, salaries of sales managers, travel and entertainment expenses, and trade show expenses. General and administrative expenses consist primarily of executive and administrative compensation and benefits, office rent, utilities, communication and technology expenses, provision for doubtful accounts, and legal and professional fees.
Deferred Rent	Deferred Rent We recognize escalating lease payments on a straight-line basis over the term of each respective lease with the difference between cash payment and rent expense recognized being recorded as deferred rent in accrued liabilities in the accompanying consolidated balance sheets.
Insurance Programs	Insurance Programs We maintain third-party insurance coverage against certain risks. Under our insurance programs, we share the risk of loss with our insurance underwriters by maintaining high deductibles subject to aggregate annual loss limitations. In connection with these automobile, general liability and workers’ compensation insurance programs, we have entered into standby letters of credit agreements totaling $11.3 million as of both December 31, 2015 and 2014 . We fund our deductibles and record an expense for losses we expect under the programs. We determine expected losses using a combination of our historical loss experience and subjective assessments of our future loss exposure. The estimated losses are subject to uncertainty from various sources, including changes in claim reporting patterns, claim settlement patterns, judicial decisions, legislation and economic conditions. The amounts accrued for self-insured claims were $12.0 million and $9.5 million as of December 31, 2015 and 2014 , respectively. We include these accruals in accrued liabilities on our consolidated balance sheets.
Income Taxes	Income Taxes In accordance with ASC 740 - Income Taxes , we use the liability method of accounting for income taxes. Under this method, we record deferred income taxes based on temporary differences between the financial reporting and tax bases of assets and liabilities and use enacted tax rates and laws that we expect will be in effect when we recover those assets or settle those liabilities, as the case may be, to measure those taxes. We record a valuation allowance to reduce the deferred tax assets to the amount that is more likely than not to be realized. We have a valuation allowance of $4.1 million and $34.9 million as of December 31, 2015 and 2014 , respectively. In previous years, we netted our uncertain tax positions against our net operating loss carryforwards in accordance with FASB guidelines. As a result of the utilization of those loss carryforwards, we now present the uncertain tax benefits in other long-term obligations and deferred credits on our consolidated balance sheets.
Contingent Consideration	Contingent Consideration We record an estimate of the fair value of contingent consideration within accrued liabilities and other long-term obligations on our consolidated balance sheets. On a quarterly basis, we revalue the liability and record increases or decreases in the fair value as an adjustment to earnings. Changes to the contingent consideration liability can result from adjustments to the discount rate, accretion of interest expense due to the passage of time, or changes in the assumptions regarding probabilities of successful achievement of related milestones and the estimated timing in which the milestones are achieved. The assumptions used in estimating fair value require significant judgment. The use of different assumptions and judgments could result in a materially different estimate of fair value. For further information, see Note 13 regarding our fair value disclosures.
Fair Value of Financial Instruments	Fair Value of Financial Instruments Our financial instruments consist of cash and cash equivalents, trade receivables, trade payables, long-term debt, other long-term obligations, and derivative liabilities. We consider the carrying values of cash and cash equivalents, trade receivables and trade payables to be representative of their respective fair values because of their short-term maturities or expected settlement dates.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America ("U.S. GAAP") requires the use of estimates and assumptions by management in determining the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Estimates and assumptions that we consider significant in the preparation of our financial statements include those related to our allowance for doubtful accounts, goodwill, intangibles, valuation of derivatives, valuation of contingent consideration, accruals for self-insurance, income taxes, the valuation of inventory and the valuation and useful lives of property, plant and equipment.
Stripping Costs	Stripping Costs We include post-production stripping costs in the cost of inventory produced during the period as these costs are incurred. Post-production stripping costs represent stripping costs incurred after the first salable minerals are extracted from the mine.
Earnings (Loss) Per Share	Earnings (Loss) Per Share Basic earnings (loss) per share is computed by dividing net income (loss) by the weighted average number of common shares outstanding during the period. Diluted earnings (loss) per share is computed by dividing net income (loss) by the weighted average number of common shares outstanding during the period after giving effect to all potentially dilutive securities outstanding during the period. See Note 18 for additional information regarding our earnings (loss) per share.
Comprehensive Income (Loss)	Comprehensive Income (Loss) Comprehensive income (loss) represents all changes in equity of an entity during the reporting period, except those resulting from investments by and distributions to stockholders. For the years ended December 31, 2015 , 2014 and 2013 , no differences existed between our consolidated net income (loss) and our consolidated comprehensive income (loss).
Stock-based Compensation	Stock-based Compensation Stock-based employee compensation cost is measured at the grant date based on the calculated fair value of the award. We recognize expense over the employee’s requisite service period, generally the vesting period of the award, or in the case of performance-based awards, over the life of the derived service period. The related excess tax benefit received upon exercise of stock options or vesting of restricted stock, if any, is reflected in the statement of cash flows as a financing activity rather than an operating activity. See Note 17 for additional information regarding our stock-based compensation plans.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In November 2015, the FASB issued an amendment which simplifies the presentation of deferred income taxes. The amendment requires that deferred tax assets and liabilities be classified as non-current in the balance sheet. The new guidance is effective for annual periods beginning after December 15, 2016, and interim periods within those annual periods, with early adoption permitted. We early adopted the provisions of this new standard effective with the annual period ended December 31, 2015 on a prospective basis. Adoption of this new standard resulted in a reclassification of our net current deferred tax asset to net non-current deferred tax asset in our consolidated balance sheets. No prior periods were retrospectively adjusted. In September 2015, the FASB issued an amendment on measurement period adjustments related to business combinations. The new guidance requires that the cumulative impact of a measurement period adjustment, including the impact on prior periods, be recognized in the reporting period in which the adjustment is identified. Entities should apply the new guidance prospectively to measurement period adjustments that occur after the effective date. The amendment is effective for interim and annual periods beginning after December 15, 2015, with early adoption permitted. We early adopted the provisions of this new standard effective with the interim period ended September 30, 2015. Accordingly, we applied the amendment prospectively, and it did not result in any material impact on our consolidated financial statements or results of operations. In April 2015, the FASB issued an amendment related to debt issuance costs. The amendment requires that all costs incurred to issue debt be presented in the balance sheet as a direct reduction from the carrying value of the debt, similar to the presentation of debt discounts. Entities should apply the new guidance on a retrospective basis, wherein the balance sheet of each individual period presented should be adjusted to reflect the period-specific effects of applying the new guidance. In August 2015, the FASB issued a second amendment related to debt issuance costs clarifying that debt issuance costs related to line-of-credit arrangements could continue to be presented as an asset and be subsequently amortized over the term of the line-of-credit arrangement, regardless of whether there are any outstanding borrowings on the arrangement. The amendment is effective for annual periods beginning after December 15, 2015 and interim periods within those annual periods, with early adoption permitted. We do not expect the adoption of this amendment in fiscal year 2016 to have a material impact on our consolidated financial statements and results of operations. In May 2014, the FASB issued an amendment related to revenue recognition. The new guidance sets forth a new five step revenue recognition model which replaces the prior revenue recognition guidance in its entirety and is intended to eliminate numerous industry-specific pieces of revenue recognition guidance that have historically existed under U.S. GAAP. The underlying principle of the new amendment is that a business or other organization will recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects what it ultimately expects to receive in exchange for the goods or services. The amendment also requires more detailed disclosures and provides additional guidance for transactions that were not addressed completely in the prior accounting guidance. In August 2015, the FASB issued a second amendment related to revenue recognition to delay the effective date of the new revenue recognition guidance by one year. The amendment is effective for annual periods beginning after December 15, 2017 and interim periods within those periods. Early adoption will be permitted for annual periods beginning after December 15, 2016 and interim periods within those periods. We are currently evaluating the impact that this standard will have on our consolidated financial statements and results of operations. In April 2014, the FASB issued an amendment on reporting discontinued operations and disclosures of disposals of components of an entity. Specifically, the amendment revises the definition of a discontinued operation, expands disclosure requirements for transactions that meet the definition of a discontinued operation and requires entities to disclose additional information about individually significant components that are disposed of or held for sale and do not qualify as discontinued operations. Additionally, entities will be required to reclassify assets and liabilities of a discontinued operation for all comparative periods presented in the statement of financial position and to separately present certain information related to the operating and investing cash flows of the discontinued operation, for all comparative periods, in the statement of cash flows. The amendment is effective for annual and interim periods beginning after December 15, 2014 and is to be adopted on a prospective basis for all disposals (except disposals classified as held for sale prior to the adoption date) or components initially classified as held for sale in periods beginning on or after the adoption date. We adopted this guidance effective January 1, 2015, and there was no material impact on our consolidated financial statements or results of operations.

ACQUISITIONS AND DISPOSITIONS (

ACQUISITIONS AND DISPOSITIONS (Tables)	12 Months Ended
	Dec. 31, 2015
Business Combinations [Abstract]
Schedule of Assets Acquired and Liabilities Assumed	The following table summarizes the total consideration for the 2014 acquisitions and presents the allocation of these amounts to the net tangible and intangible assets acquired and liabilities assumed based on the estimated fair values as of the respective acquisition dates (in thousands). 2014 Acquisitions Custom-Crete (1) NYSS Mobile-Crete (2) All Other (3) Accounts receivable (4) $ 3,669 $ 5,898 $ 2,578 $ — Inventory 522 1,161 336 295 Other current assets — 134 — 102 Property, plant and equipment 11,802 1,442 4,156 7,400 Intangible assets 11,078 5,042 8,630 4,722 Total assets acquired $ 27,071 $ 13,677 $ 15,700 $ 12,519 Current liabilities 2,598 2,539 1,284 — Long-term liabilities 473 — — — Total liabilities assumed $ 3,071 $ 2,539 $ 1,284 $ — Goodwill 12,513 3,260 8,685 4,050 Total consideration $ 36,513 $ 14,398 $ 23,101 $ 16,569 (1) Total consideration for the Custom-Crete acquisition includes $35.8 million of cash and $0.7 million for the fair value of a deferred payment as of the acquisition date to be paid upon the division of certain shared properties. (2) Total consideration for the Mobile-Crete acquisition includes $21.5 million of cash and $1.6 million for the fair value of the Mobile-Crete Earn-out as of the acquisition date. (3) Total consideration for acquisitions included in the caption "All Other" above includes $15.5 million of cash and $1.1 million for the fair value of notes payable due to the previous owners as of the acquisition date. The following table summarizes the total consideration for the 2015 acquisitions and presents the allocation of these amounts to the net tangible and intangible assets acquired and liabilities assumed based on the estimated fair values as of the respective acquisition date (in thousands). 2015 Acquisitions Right Away (1) Ferrara Bros. (2)(3) Colonial (2) DuBrook (2)(4) Wantage (2)(5) Heavy (2)(6) All Other (7) Cash $ 928 $ 67 $ 888 $ — $ — $ 20 $ — Accounts receivable 1,832 13,224 4,305 1,218 — 975 — Inventory 348 1,434 378 349 — 1,449 668 Other current assets 196 608 126 739 — 92 — Property, plant and equipment 9,696 13,147 6,325 2,394 12,694 6,095 5,153 Definite-lived intangible assets 7,036 50,310 4,640 4,473 — — — Other long-term assets — — 153 — — 47 — Total assets acquired $ 20,036 $ 78,790 $ 16,815 $ 9,173 $ 12,694 $ 8,678 $ 5,821 Current liabilities 1,399 6,944 5,299 910 — 3,269 91 Long-term deferred income tax 5,929 — — — — — — Other long-term liabilities — — — 59 — — — Total liabilities assumed $ 7,328 $ 6,944 $ 5,299 $ 969 $ — $ 3,269 $ 91 Goodwill 11,086 6,916 3,680 3,887 5,301 $ 20,243 8,933 Total consideration $ 23,794 $ 78,762 $ 15,196 $ 12,091 $ 17,995 $ 25,652 $ 14,663 (1) The purchase price allocation for the Right Away acquisition is subject to change pending determination of the conclusion of tax attributes as of the acquisition date and the fair value of identifiable intangible assets and the Right Away Earn-out. The fair value of the Right Away acquired accounts receivable is $1.8 million , with a gross contractual amount of $2.2 million . We do not expect to collect $0.4 million of the Right Away acquired accounts receivable. Total consideration for the Right Away acquisition includes $19.9 million of cash and $3.9 million for the fair value of the Right Away Earn-out as of the acquisition date. (2) The purchase price allocations for the Ferrara Bros., Colonial, DuBrook, Wantage, and Heavy acquisitions are preliminary and remain subject to adjustments, including, but not limited to, adjustments related to working capital, the fair value of the Ferrara Bros. Contingent Consideration, identifiable intangible assets, property, plant and equipment, and certain accrued liabilities. The fair value of the DuBrook and Colonial acquired accounts receivable approximate the gross contractual amounts as of the respective acquisition dates. The fair value of the Ferrara Bros. acquired accounts receivable is $13.2 million , with a gross contractual amount of $14.3 million . We do not expect to collect $1.1 million of the Ferrara Bros. acquired accounts receivable. The fair value of the Heavy acquired accounts receivable is $1.0 million , pending further analysis, with a gross contractual amount of $4.3 million . We do not expect to collect $3.3 million of the Heavy acquired accounts receivable, pending further review. (3) Total consideration for the Ferrara Bros. acquisition includes $44.1 million of cash, approximately 442,000 shares of our common stock valued at approximately $15.1 million on the date of issuance, and $19.6 million for the fair value of the Ferrara Bros. Contingent Consideration as of the acquisition date. (4) Total consideration for the DuBrook acquisition includes $11.5 million of cash and $0.6 million for the fair value of the Dubrook Earn-out as of the acquisition date. (5) Total consideration for the Wantage acquisition includes $15.2 million of cash and $2.8 million for the fair value of deferred payments due to the previous owners. (6) Total consideration for the Heavy acquisition includes $20.9 million of cash and $4.8 million for the fair value of deferred payments due to the previous owners. (7) The purchase price allocation for the acquisitions included in the caption "All Other" above are preliminary and remain subject to adjustments, including, but not limited to, the fair value of identifiable intangible assets and property, plant and equipment. Total consideration for acquisitions included in the caption "All Other" above includes $13.0 million of cash and $1.7 million for the fair value of deferred payments due to the previous owners. The major classes of intangible assets acquired in the 2015 and 2014 acquisitions were as follows (in thousands): Weighted Average Amortization Period (In Years) Fair Value At Acquisition Date Trade names 22.98 $ 39,002 Customer relationships 8.29 32,469 Non-compete agreements 4.92 10,167 Leasehold interests 12.24 7,525 Favorable contract 3.50 3,650 Backlog 1.00 1,640 Land rights indefinite-lived 1,478 Total $ 95,931
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	As of December 31, 2015 , the estimated future aggregate amortization expense of intangible assets from the 2015 and 2014 acquisitions was as follows (in thousands): Year Ending December 31, 2016 $ 10,476 2017 9,870 2018 9,422 2019 8,013 2020 6,377 Thereafter 40,005 Total $ 84,163 As of December 31, 2015 , the estimated remaining amortization of our definite-lived intangible assets was as follows (in thousands): Year Ending December 31, 2016 $ 11,956 2017 11,350 2018 10,902 2019 9,493 2020 7,857 Thereafter 42,718 Total $ 94,276
Business Acquisition, Pro Forma Information	All other acquisitions have been included and represent our estimate of the results of operations for the years ended December 31, 2015 and 2014 as if the 2014 acquisitions had been completed on January 1, 2013 and the 2015 acquisitions had been completed on January 1, 2014 (in thousands, except per share information): For the Years Ended December 31, (unaudited) 2015 2014 Revenue from continuing operations $ 1,033,058 $ 947,357 Net income $ 29,885 $ 23,317 Income per share, basic $ 2.12 $ 1.72 Income per share, diluted $ 1.92 $ 1.68
Adjustments to Pro Forma Net Income (Loss)	The unaudited pro forma net income (loss) and net income (loss) per share amounts above reflect the following adjustments: Years Ended December 31, 2015 2014 Decrease in intangible amortization expense $ (243 ) $ (11,040 ) Increase in depreciation expense 231 755 Exclusion of buyer transaction costs 2,774 1,941 Exclusion of seller transaction costs 46 — Exclusion of pension expense for pension plan acquired 212 737 Exclusion of segment results for segment not acquired (99 ) (547 ) Increase in interest expense (243 ) (980 ) Increase (decrease) in income tax expense 744 (3,550 ) Net adjustments $ 3,422 $ (12,684 )

DISCONTINUED OPERATIONS (Tables

DISCONTINUED OPERATIONS (Tables)	12 Months Ended
	Dec. 31, 2015
Discontinued Operations and Disposal Groups [Abstract]
Schedule of Results of Discontinued Operations	Below is a summary of the assets and liabilities associated with our one remaining precast concrete operation sold in June 2015, which was classified as held for sale as of December 31, 2014 (in thousands): December 31, 2014 Trade accounts receivable, net $ 1,337 Inventories 704 Other current assets 897 Property, plant, and equipment, net 841 Total assets held for sale $ 3,779 Accounts payable $ 398 Accrued liabilities 504 Total liabilities held for sale $ 902 The results of these discontinued operations were as follows (in thousands): Years Ended December 31, 2015 2014 2013 Revenue $ 5,523 $ 8,920 $ 16,914 Depreciation, depletion and amortization, or DD&A — — (148 ) Operating expenses, excluding DD&A, and other income (5,830 ) (9,481 ) (18,448 ) Loss from discontinued operations (307 ) (561 ) (1,682 ) (Loss) gain on disposal of assets (193 ) 640 (219 ) Loss on impairment of long-lived assets — (900 ) — Loss from discontinued operations, before income taxes (500 ) (821 ) (1,901 ) Income tax (benefit) expense (180 ) 172 (45 ) Loss from discontinued operations $ (320 ) $ (993 ) $ (1,856 )

GOODWILL AND INTANGIBLE ASSET35

GOODWILL AND INTANGIBLE ASSETS, NET (Tables)	12 Months Ended
	Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Changes in Goodwill By Reportable Segment	The changes in goodwill by reportable segment from January 1, 2014 to December 31, 2015 were as follows (in thousands): Ready-mixed Concrete Segment Aggregate Products Segment Other Non-Reportable Segments Total Balance at January 1, 2014 $ 11,646 $ — $ — $ 11,646 Acquisitions (See Note 2) 36,111 — 3,000 39,111 Balance at December 31, 2014 47,757 — 3,000 50,757 Acquisitions (See Note 2) 46,062 13,984 — 60,046 All other purchase price allocation adjustments (See Note 2) (10,861 ) — 262 (10,599 ) Balance at December 31, 2015 $ 82,958 $ 13,984 $ 3,262 $ 100,204
Schedule of Finite-Lived Intangible Assets	Our purchased intangible assets were as follows (in thousands) as of December 31, 2015 and 2014 : December 31, 2015 Gross Accumulated Amortization Net Weighted Average Remaining Life (in years) Definite-lived intangible assets Trade names $ 40,302 $ (2,060 ) $ 38,242 22.04 Customer relationships 45,969 (7,939 ) 38,030 7.34 Non-competes 10,167 (2,211 ) 7,956 3.87 Leasehold interests 7,525 (668 ) 6,857 10.49 Favorable contract 3,650 (869 ) 2,781 2.67 Backlog 1,640 (1,230 ) 410 0.25 Total definite-lived intangible assets 109,253 (14,977 ) 94,276 13.07 Indefinite-lived intangible assets Land rights (1) 1,478 — 1,478 Total purchased intangible assets $ 110,731 $ (14,977 ) $ 95,754 (1) Land rights acquired in the Custom-Crete acquisition will be reclassified to property, plant and equipment upon the division of certain shared properties and settlement of the associated deferred payment. For further information, see Note 2. December 31, 2014 Gross Accumulated Amortization Net Weighted Average Remaining Life (in years) Trade names $ 4,200 $ (330 ) $ 3,870 9.31 Customer relationships 23,540 (3,214 ) 20,326 8.06 Non-competes 4,421 (218 ) 4,203 4.58 Leasehold interest 3,382 (61 ) 3,321 9.63 Total purchased intangible assets $ 35,543 $ (3,823 ) $ 31,720 7.91
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	As of December 31, 2015 , the estimated future aggregate amortization expense of intangible assets from the 2015 and 2014 acquisitions was as follows (in thousands): Year Ending December 31, 2016 $ 10,476 2017 9,870 2018 9,422 2019 8,013 2020 6,377 Thereafter 40,005 Total $ 84,163 As of December 31, 2015 , the estimated remaining amortization of our definite-lived intangible assets was as follows (in thousands): Year Ending December 31, 2016 $ 11,956 2017 11,350 2018 10,902 2019 9,493 2020 7,857 Thereafter 42,718 Total $ 94,276

INVENTORIES (Tables)

INVENTORIES (Tables)	12 Months Ended
	Dec. 31, 2015
Inventory Disclosure [Abstract]
Schedule of Inventory	Inventory as of December 31, 2015 and 2014 consisted of the following (in thousands): December 31, 2015 2014 Raw materials $ 33,792 $ 29,263 Building materials for resale 1,736 1,479 Other 1,198 980 $ 36,726 $ 31,722

PROPERTY, PLANT AND EQUIPMENT (

PROPERTY, PLANT AND EQUIPMENT (Tables)	12 Months Ended
	Dec. 31, 2015
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property, plant and equipment, net as of December 31, 2015 and 2014 consisted of the following (in thousands): December 31, 2015 2014 Land and mineral deposits $ 69,265 $ 47,618 Buildings and improvements 17,198 16,648 Machinery and equipment 131,209 95,710 Mixers, trucks and other vehicles 117,448 80,001 Other 227 242 Construction in progress 15,255 9,267 350,602 249,486 Less: accumulated depreciation and depletion (102,479 ) (72,962 ) $ 248,123 $ 176,524

ALLOWANCE FOR DOUBTFUL ACCOUN38

ALLOWANCE FOR DOUBTFUL ACCOUNTS AND CUSTOMER DISPUTES (Tables)	12 Months Ended
	Dec. 31, 2015
Receivables [Abstract]
Schedule of Activity in Allowance for Doubtful Accounts	Activity in our allowance for doubtful accounts receivable and customer disputes consisted of the following (in thousands): December 31, 2015 2014 Balance, beginning of period $ 3,726 $ 2,813 Provision for doubtful accounts and customer disputes 4,198 1,924 Uncollectible receivables written off, net of recoveries (1,799 ) (1,011 ) Balance, end of period $ 6,125 $ 3,726

ACCRUED LIABILITIES (Tables)

ACCRUED LIABILITIES (Tables)	12 Months Ended
	Dec. 31, 2015
Payables and Accruals [Abstract]
Schedule of Accrued Liabilities is as Follows	Our accrued liabilities were as follows (in thousands): December 31, 2015 2014 Accrued materials $ 22,428 $ 14,319 Accrued insurance reserves 15,341 10,512 Accrued compensation and benefits 15,024 11,251 Accrued property, sales and other taxes 9,058 5,235 Deferred consideration 4,774 — Contingent consideration, current portion 2,635 2,250 Deferred rent 1,838 2,126 Accrued interest 1,500 1,487 Other 7,398 3,211 $ 79,996 $ 50,391

DEBT (Tables)

DEBT (Tables)	12 Months Ended
	Dec. 31, 2015
Debt Disclosure [Abstract]
Schedule of Debt and Capital Leases	A summary of our debt and capital leases as of December 31, 2015 and 2014 was as follows (in thousands): December 31, 2015 2014 Senior secured notes due 2018 $ 200,000 $ 200,000 Senior secured credit facility 45,000 — Convertible secured notes due 2015 — 117 Capital leases 16,555 7,395 Other financing 20,194 12,925 Total debt 281,749 220,437 Less: current maturities 9,386 5,104 Long-term debt, net of current maturities $ 272,363 $ 215,333
Schedule of Principal Amounts Due Under Debt Agreements for the Next Five Years	As of December 31, 2015, the principal amounts due under our debt agreements for the next five years and thereafter were as follows (in thousands): Year Ending December 31, 2016 $ 9,386 2017 9,389 2018 254,037 2019 6,191 2020 2,633 Thereafter 113 $ 281,749

DERIVATIVES (Tables)

DERIVATIVES (Tables)	12 Months Ended
	Dec. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary of derivative instruments at fair value	The following table presents the fair value of our derivative instruments (in thousands) as of December 31, 2015 and 2014 : Fair Value December 31, Derivative Instruments Not Designated as Balance Sheet Location 2015 2014 Warrants Derivative liabilities $ 67,401 $ 25,246
Effect of derivative instruments on the statement of operations	The following table presents the effect of derivative instruments (in thousands) on the accompanying consolidated statements of operations for the years ended December 31, 2015 , 2014 , and 2013 , excluding income tax effects: Years Ended December 31, Derivative Instruments Not Designated as Location of Loss 2015 2014 2013 Warrants Derivative loss $ (60,016 ) $ (3,556 ) $ (16,833 ) Convertible Note embedded derivative (1) Derivative loss — — (13,131 ) $ (60,016 ) $ (3,556 ) $ (29,964 ) (1) Our Convertible Notes embedded derivative was written-off in June 2013, as the remaining noteholders no longer had conversion rights after that date.
Volume positions of warrants and convertible notes	Warrant volume positions are presented as the number of shares underlying the instruments. The table below presents our volume positions (in thousands) as of December 31, 2015 , 2014 , and 2013 : Number of Shares December 31, Derivative Instruments Not Designated as Hedging Instruments under ASC 815 2015 2014 2013 Warrants 2,361 2,999 3,000

FAIR VALUE DISCLOSURES (Tables)

FAIR VALUE DISCLOSURES (Tables)	12 Months Ended
	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Schedule of Liabilities Categorized by Fair Value Measurements Hierarchy	The following tables present our fair value hierarchy for liabilities measured at fair value on a recurring basis as of December 31, 2015 and 2014 (in thousands): As of December 31, 2015 Total Level 1 Level 2 Level 3 Derivative – Warrants $ 67,401 $ — $ 67,401 $ — Contingent consideration, including current portion (1) (2) (3) (4) (5) (6) 30,119 — — 30,119 $ 97,520 $ — $ 67,401 $ 30,119 As of December 31, 2014 Total Level 1 Level 2 Level 3 Derivative – Warrants $ 25,246 $ — $ — $ 25,246 Contingent consideration (1) (2) 5,344 — — 5,344 $ 30,590 $ — $ — $ 30,590 (1) The current portion of contingent consideration is included in accrued liabilities in our consolidated balance sheets. The long-term portion of contingent consideration is included in other long-term obligations and deferred credits in our consolidated balance sheets. (2) Includes the fair value of the earn-out payments associated with the 2012 acquisition of Bode Gravel Co. and Bode Concrete LLC. The fair value was determined based on expected payouts that will be due to the former owners based on the achievement of certain incremental sales volume milestones, using a contractual discount rate of 7.0% . These payments were capped at a fair value of $3.5 million as of December 31, 2015 and $5.3 million as of December 31, 2014 . (3) Includes the fair value of the Mobile-Crete Earn-out (see Note 2). The fair value was determined based on expected payouts that will be due to the former owners based on probability-weighted assumptions related to average annual WTI prices reaching certain predetermined levels from December 8, 2015 through December 7, 2016, using a discount rate of 3.50% . The fair value of the Mobile-Crete Earn-out was less than $0.1 million as of December 31, 2015 . (4) Includes the fair value of the Right Away Earn-out (see Note 2). The fair value was determined based on expected payouts that will be due to the former owners based on probability-weighted assumptions related to the achievement of sales volume milestones, using a discount rate of 8.50% . The fair value of the Right Away Earn-out was $4.7 million as of December 31, 2015 . (5) Includes the fair value of the Ferrara Bros. Contingent Consideration (see Note 2). The fair value was determined based on the expected vesting of incentive awards granted to the former owners at acquisition based on probability-weighted assumptions related to the achievement of certain EBITDA thresholds, using a discount rate of 10.53% . The fair value of the Ferrara Bros. Contingent Consideration was $21.2 million as of December 31, 2015 . (6) Includes the fair value of the DuBrook Earn-out (see Note 2). The fair value was determined based on the expected payouts that will be due to the former owners based on probability-weighted assumptions related to the achievement of sales volume milestones, using a discount rate of 15.75% . The fair value of the DuBrook Earn-out was $0.7 million as of December 31, 2015 .
Schedule of Changes in Level 3 Fair Value Measurements	A reconciliation of the changes in Level 3 fair value measurements is as follows for December 31, 2015 and 2014 (in thousands): Warrants Contingent Consideration Balance at January 1, 2014 $ 21,690 $ 7,000 Total losses included in earnings (1) 3,560 — Payment on contingent consideration — (1,656 ) Write-off of derivative on exercised Warrants (2) (4 ) — Balance at December 31, 2014 25,246 5,344 Acquisitions (3) — 25,707 Total losses included in earnings (1) 19,551 932 Payment on contingent consideration — (1,864 ) Write-off of derivative on exercised Warrants (2) (4 ) — Issuances of equity, net of cash proceeds (4) (56 ) — Transfer out (5) (44,737 ) — Balance at December 31, 2015 $ — $ 30,119 (1) Represents the loss on revaluation of Warrants from January 1, 2014 through June 30, 2015, which is included in derivative loss in our consolidated statements of operations, and the net gain on revaluation of contingent consideration, which is included in gain on revaluation of contingent consideration in our consolidated statements of operations. We recorded a net loss on revaluation of contingent consideration of $0.9 million in the year ended December 31, 2015 , as result of the estimate of future WTI prices offset by accretion of interest for the passage of time as well as changes in the probability-weighted assumptions related to the achievement of sales volumes and certain EBITDA thresholds. No gain or loss on revaluation of contingent consideration was recognized in the year ended December 31, 2014 . (2) Represents the pro rata portion of the derivative liability associated with exercised Warrants from January 1, 2014 through June 30, 2015 and measured at the date of share issuance, which is included in derivative loss in our consolidated statements of operations. (3) The liabilities for earn-outs and contingent considerations for acquisitions from 2014 and 2015 were valued using Monte Carlo simulations which incorporated probability-weighted assumptions related to the achievement of varying thresholds of pre-determined sales volumes, WTI prices for the applicable year, and EBITDA. Inputs into the models were based upon observable market data where possible. Where observable market data did not exist, we modeled inputs based upon similar observable inputs. The key inputs included discount rates ranging from 3.50% to 15.75% , a forecasted average of WTI prices from December 8, 2014 through December 7, 2016 from quoted sources, and management's estimates of future sales volumes and EBITDA. (4) Represents the pro rata portion of the derivative liability associated with exercised Warrants from January 1, 2014 through June 30, 2015 and measured at the date of share issuance, which is included in additional paid-in capital in our condensed consolidated balance sheets. (5) Transfer out of Level 3 financial liabilities was due to changes in the observability of market inputs used in the valuation of our Warrants. The transfer was measured as of June 30, 2015, the end of the period in which the transfer occurred.

STOCKHOLDERS' EQUITY (Tables)

STOCKHOLDERS' EQUITY (Tables)	12 Months Ended
	Dec. 31, 2015
Equity [Abstract]
Schedule of Common Stock Outstanding	The following table presents information regarding U.S. Concrete’s common stock (in thousands): December 31, 2015 2014 Shares authorized 100,000 100,000 Shares outstanding at end of period 14,871 13,978 Shares held in treasury 842 697

INCOME TAXES (Tables)

INCOME TAXES (Tables)	12 Months Ended
	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Schedule of Effective Income Tax Rate Reconciliation	A reconciliation of our effective income tax rate to the amounts calculated by applying the federal statutory corporate tax rate of 35% is as follows (in thousands): Years Ended December 31, 2015 2014 2013 Tax (benefit) expense at statutory rate $ (1,510 ) 35.0 % $ 8,306 35.0 % $ (5,987 ) 35.0 % Add (deduct): Rates different than statutory (165 ) 3.8 — — — — State income taxes (4,282 ) 99.2 2,797 11.8 1,037 (6.1 ) Nondeductible items 1,025 (23.7 ) 1,304 5.5 970 (5.7 ) Valuation allowance (29,519 ) 684.1 (9,752 ) (41.1 ) 495 (2.9 ) Unrecognized tax benefit 390 (9.0 ) 369 1.5 (3,732 ) 21.8 Derivatives and note discount — — (911 ) (3.8 ) 8,369 (48.9 ) Capital loss carryforward expiration 3,485 (80.8 ) — — — — Depletion (47 ) 1.1 — — — — Other 488 (11.3 ) 43 0.2 16 0.0 Income tax (benefit) expense from continuing operations $ (30,135 ) 698.4 % $ 2,156 9.1 % $ 1,168 (6.8 )%
Schedule of Components of Income Tax Expense (Benefit)	The amounts of our consolidated federal and state income tax (benefit) expense from continuing operations were as follows (in thousands): Years Ended December 31, 2015 2014 2013 Current: Federal $ 5,493 $ 487 $ 130 State 1,843 1,674 1,144 Foreign (43 ) — — 7,293 2,161 1,274 Deferred: Federal $ (29,712 ) $ (5 ) $ — State (7,779 ) — (106 ) Foreign 63 — — (37,428 ) (5 ) (106 ) Income tax (benefit) expense from continuing operations $ (30,135 ) $ 2,156 $ 1,168 Income tax (benefit) expense was allocated between continuing operations and discontinued operations as follows: Years Ended December 31, 2015 2014 2013 Continuing operations $ (30,135 ) $ 2,156 $ 1,168 Discontinued operations (180 ) 172 (45 ) Income tax (benefit) expense $ (30,315 ) $ 2,328 $ 1,123
Schedule of Deferred Tax Assets and Liabilities	We present the effects of those differences as deferred income tax liabilities and assets, as follows (in thousands): December 31, 2015 2014 Deferred tax assets: Derivatives $ 24,849 $ 8,463 Goodwill and other intangibles 4,165 6,747 Receivables 1,705 988 Inventory 4,114 4,264 Accrued insurance 5,170 4,021 Depletion 366 490 Deferred revenue 358 332 Stock compensation 769 986 Charitable contribution carryover — 166 Other accrued expenses 7,465 5,224 Capital loss carryforward expiration — 3,736 Net operating loss carryforwards 5,699 10,039 Other 2,024 1,507 Total gross deferred tax assets 56,684 46,963 Valuation allowance (4,131 ) (34,937 ) Net deferred tax assets 52,553 12,026 Deferred income tax liabilities: Property, plant and equipment, net 21,678 16,566 Total gross deferred tax liabilities 21,678 16,566 Net deferred tax asset (liability) $ 30,875 $ (4,540 ) The allocation of deferred taxes between current and long-term as of December 31, 2015 and 2014 was as follows (in thousands): December 31, 2015 2014 Current deferred tax asset, net $ — $ 1,887 Long-term deferred tax asset, net 30,875 — Long-term deferred tax liability, net — 6,427 Net deferred tax asset (liability) $ 30,875 $ (4,540 )
Schedule of Unrecognized Tax Benefits Roll Forward	A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in thousands): Years Ended December 31, 2015 2014 2013 Unrecognized tax benefits at January 1 $ 3,636 $ 3,489 $ 6,598 Additions for tax positions related to current year 464 475 311 Additions for tax positions related to prior years — 100 393 Reductions due to lapse of statute of limitations — (63 ) (3,813 ) Settlements — (365 ) — Unrecognized tax benefits at December 31 $ 4,100 $ 3,636 $ 3,489

STOCK-BASED COMPENSATION (Table

STOCK-BASED COMPENSATION (Tables)	12 Months Ended
	Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Restricted Stock Unit Activity	Restricted stock unit activity for the year ended December 31, 2015 was as follows (shares in thousands): Number Weighted- Unvested restricted stock units outstanding at beginning of period 22 $ 25.57 Granted 16 50.11 Vested (22 ) 25.57 Forfeited — — Unvested restricted stock units outstanding at end of period 16 $ 50.11
Schedule of Restricted Stock Award Activity	Restricted stock award activity for the year ended December 31, 2015 was as follows (shares in thousands): Number Weighted- Unvested restricted stock awards outstanding at beginning of period 434 $ 13.30 Granted 219 30.50 Vested (418 ) 14.06 Forfeited (19 ) 27.64 Unvested restricted stock awards outstanding at end of period 216 $ 28.75
Schedule of Range of Assumptions Used to Estimate the Fair Value Of Performance Based Restricted Stock	The range of assumptions used to estimate the fair value of performance-based restricted stock awards granted during the years ended December 31, 2015, 2014, and 2013 were as follows: Years Ended December 31, 2015 2014 2013 Expected term (years) 0.70 - 1.00 0.08 - 1.08 0.17 - 1.17 Expected volatility 36.7% 38.6% - 42.6% 41.3% - 43.3% Risk-free interest rate 0.93% 0.87% - 1.17% 0.38% - 0.68% Weighted-average grant date fair value $21.47 - $24.94 $14.18 - $26.42 $5.51 - $16.32
Schedule of Stock Option Activity	Stock option activity for the year ended December 31, 2015 was as follows (shares in thousands): Number Weighted- Options outstanding at beginning of year 46 $ 18.46 Granted — — Exercised (15 ) 20.84 Forfeited and expired — — Options outstanding at end of year 31 $ 17.32 Options exercisable at end of year 31 $ 17.32
Schedule of Information about Stock Options Outstanding	The following table summarizes information about stock options outstanding as of December 31, 2015 (shares in thousands): Options Outstanding Options Exercisable Range of exercise prices Number of Shares Outstanding Weighted Average Remaining Contractual Life Weighted Average Exercise Price Number of Shares Outstanding Weighted Average Exercise Price $12.00 - $12.00 10 4.51 $ 12.00 10 $ 12.00 $15.00 - $15.00 11 4.52 15.00 11 15.00 $22.69 - $22.69 5 4.52 22.69 5 22.69 $26.68 - $26.68 5 4.52 26.68 5 26.68 $12.00 - $26.68 31 4.52 $ 17.32 31 $ 17.32

NET EARNINGS (LOSS) PER SHARE (

NET EARNINGS (LOSS) PER SHARE (Tables)	12 Months Ended
	Dec. 31, 2015
Earnings Per Share [Abstract]
Schedule of the Components of the Basic and Diluted Earnings Per Share	The following is a reconciliation of the components of the basic and diluted earnings per share calculations for the years ended December 31, 2015 and 2014 , in thousands: Years Ended December 31, 2015 2014 Numerator: Income from continuing operations $ 25,820 $ 21,575 Loss from discontinued operations, net of taxes (320 ) (993 ) Numerator for basic and diluted earnings per share $ 25,500 $ 20,582 Denominator: Basic weighted average common shares outstanding 14,080 13,541 Restricted stock and restricted stock units 170 210 Warrants 1,295 136 Stock options 15 11 Denominator for diluted earnings per share 15,560 13,898
Schedule of Potentially Dilutive Shares Excluded from the Diluted Earnings (Loss) Per Share Calculations	The following table shows the type and number (in thousands) of potentially dilutive shares excluded from the diluted earnings (loss) per share calculations for the periods presented as their effect would have been anti-dilutive or they have not met their performance target: Years Ended December 31, 2014 2013 Potentially dilutive shares: Convertible Notes — 349 Unvested restricted stock awards and restricted stock units 84 516 Stock options 14 80 Warrants 1,500 3,000 Total potentially dilutive shares 1,598 3,945

BUSINESS SEGMENTS (Tables)

BUSINESS SEGMENTS (Tables)	12 Months Ended
	Dec. 31, 2015
Segment Reporting [Abstract]
Schedule of continuing operations by reportable segment	The following tables set forth certain financial information relating to our continuing operations by reportable segment (in thousands): Years ended December 31, 2015 2014 2013 Revenue: Ready-mixed concrete Sales to external customers $ 876,633 $ 632,787 $ 545,302 Aggregate products Sales to external customers 34,191 31,662 21,715 Intersegment sales 26,248 20,956 16,498 Total aggregate products 60,439 52,618 38,213 Total reportable segment revenue 937,072 685,405 583,515 Other products and eliminations 37,645 18,309 14,640 Total revenue $ 974,717 $ 703,714 $ 598,155 Reportable Segment Adjusted EBITDA: Ready-mixed concrete $ 131,940 $ 84,706 $ 58,583 Aggregate products 14,996 10,549 7,192 Total reportable segment Adjusted EBITDA $ 146,936 $ 95,255 $ 65,775 Reconciliation of reportable segment Adjusted EBITDA to income (loss) from continuing operations before income taxes: Total reportable segment Adjusted EBITDA $ 146,936 $ 95,255 $ 65,775 Other products and eliminations income from operations 8,704 3,082 2,615 Corporate overhead, net of insurance allocations (39,012 ) (30,870 ) (29,957 ) Depreciation, depletion and amortization for reportable segments (38,767 ) (20,362 ) (15,777 ) Interest expense, net (21,734 ) (20,431 ) (11,332 ) Corporate gain on early extinguishment of debt — 11 985 Corporate derivative loss (60,016 ) (3,556 ) (29,964 ) Loss on revaluation of contingent consideration (932 ) — — Corporate, other products and eliminations other income, net 506 602 550 (Loss) income from continuing operations before income taxes $ (4,315 ) $ 23,731 $ (17,105 ) Capital Expenditures: Ready-mixed concrete $ 12,321 $ 21,754 $ 12,236 Aggregate products 7,859 9,128 5,773 Other 4,797 1,685 1,979 Total capital expenditures $ 24,977 $ 32,567 $ 19,988 Revenue by Product: Ready-mixed concrete $ 876,633 $ 632,787 $ 545,302 Aggregate products 34,191 31,662 21,715 Aggregate distribution 28,393 4,892 — Building materials 17,533 15,410 14,656 Lime 9,250 10,459 7,356 Hauling 5,425 4,221 4,533 Other 3,292 4,283 4,593 Total revenue $ 974,717 $ 703,714 $ 598,155 As of December 31, 2015 2014 2013 Identifiable Assets: Ready-mixed concrete and concrete-related products $ 166,837 $ 126,141 $ 91,776 Aggregate products 65,937 40,878 36,819 Other products and corporate 15,349 9,505 9,965 Total identifiable assets $ 248,123 $ 176,524 $ 138,560

COMMITMENTS AND CONTINGENCIES (

COMMITMENTS AND CONTINGENCIES (Tables)	12 Months Ended
	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Schedule of Future Minimum Rental Payments	Future minimum rental payments with respect to our operating lease obligations as of December 31, 2015 , are as follows (in thousands): Year Ending December 31, 2016 $ 13,529 2017 12,575 2018 10,575 2019 7,446 2020 3,288 Thereafter 18,157 $ 65,570

EMPLOYEE BENEFIT PLANS AND MU49

EMPLOYEE BENEFIT PLANS AND MULTI-EMPLOYER PENSION PLANS (Tables)	12 Months Ended
	Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Schedule of Multiemployer Plans	The required disclosures and our participation in significant multi-employer pension plans are presented in the table below. The EIN / Pension Plan Number column provides the Employer Identification Number (“EIN”) and the three-digit plan number, if applicable. The Pension Protection Act zone status is based on information available from the plan or the plan’s public filings. Among other factors, plans in the red zone are generally less than 65% funded, plans in the orange or yellow zones are less than 80% funded, and plans in the green zone are at least 80% funded. The FIP / RP Status Pending / Implemented column indicates plans for which a financial improvement plan (“FIP”) or a rehabilitation plan (“RP”) is either pending or has been implemented. The last column lists the expiration date(s) of the collective-bargaining agreements to which the plans are subject. Our contributions did not represent more than 5% of total contributions to any of the significant plans shown below. Pension Fund EIN / PPN Pension FIP / RP Contributions Surcharge Expiration 2014 and 2015 2013 2015 2014 2013 Western Conference of Teamsters Pension Plan 91-6145047/001 Green Green No $ 4,357 $ 3,568 $ 3,204 No 6/30/2016 to 8/31/2018 Operating Engineers Pension Trust Fund 94-6090764/001 Orange Orange Yes 1,173 933 837 No 7/1/2017 Local 282 Pension Trust Fund 11-6245313/001 Green Green No 829 819 650 No 6/30/2016 Trucking Employees of North Jersey Pension Fund 22-6063702/001 Red Red Yes 615 559 513 No 4/30/2018 Pension Fund Local 445 13-1864489/001 Green Yellow Yes 200 184 193 No 6/30/2017 Operating Engineers 825 Pension Fund 22-6033380/001 Green Orange Yes 178 161 151 Yes 3/31/2016 to 3/31/2019 Automotive Industries Pension Plan 94-1133245/001 Red Red Yes 102 179 180 No 7/31/2016 Other Various Various Various Various 604 540 495 Various 6/30/2016 to $ 8,058 $ 6,943 $ 6,223

QUARTERLY SUMMARY (unaudited) (

QUARTERLY SUMMARY (unaudited) (Tables)	12 Months Ended
	Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Schedule of Quarterly Financial Information	QUARTERLY SUMMARY (unaudited) Year Ended December 31, 2015 (in thousands, except per share data) First Second Third Fourth Revenue - continuing operations $ 171,338 $ 244,695 $ 295,111 $ 263,573 Net (loss) income $ (10,484 ) $ 9,703 $ 1,619 $ 24,662 Net (loss) income per share-basic $ (0.77 ) $ 0.69 $ 0.11 $ 1.70 Net (loss) income per share-diluted $ (0.77 ) $ 0.64 $ 0.10 $ 1.53 Year Ended December 31, 2014 (in thousands, except per share data) First Second Third Fourth Revenue - continuing operations $ 146,257 $ 180,358 $ 197,589 $ 179,510 Net (loss) income $ (1,153 ) $ 7,861 $ 13,007 $ 867 Net (loss) income per share-basic $ (0.09 ) $ 0.58 $ 0.96 $ 0.06 Net (loss) income per share-diluted $ (0.09 ) $ 0.57 $ 0.94 $ 0.06

ORGANIZATION AND SUMMARY OF S51

ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)	Jun. 02, 2015Business	Dec. 31, 2015USD ($)quarryProcessing_FacilityBusiness	Dec. 31, 2014USD ($)Mixer_TruckProcessing_FacilityBusiness	Nov. 18, 2015USD ($)	Oct. 31, 2014terminal	Dec. 31, 2013USD ($)	Nov. 22, 2013	Oct. 29, 2013USD ($)	Jul. 26, 2013Processing_Facility	Aug. 31, 2010
Debt Instrument [Line Items]
Number of businesses acquired | Business		8	9
Number of plants acquired | Processing_Facility		22	7
Number of quarries acquired | quarry		5
Number of volumetric ready-mixed concrete facilities acquired | Processing_Facility			16
Number of volumetric ready-mixed concrete trucks acquired | Mixer_Truck			109
Debt issuance cost		$ 6,100,000	$ 6,800,000
Deferred tax assets, valuation allowance		4,131,000	34,937,000
Fair value of contingent consideration			5,300,000
Warrants [Member]
Debt Instrument [Line Items]
Derivative liability		67,401,000	25,246,000
Contingent Consideration [Member]
Debt Instrument [Line Items]
Fair value of contingent consideration		30,119,000	5,344,000			$ 7,000,000
Financial Standby Letter of Credit [Member]
Debt Instrument [Line Items]
Guaranty liabilities		11,300,000	11,300,000
Insurance Claims [Member]
Debt Instrument [Line Items]
Amounts of self-insured claims		12,000,000	9,500,000
Senior Secured Notes Due 2018 [Member]
Debt Instrument [Line Items]
Long-term debt, fair value		207,000,000	209,000,000
Convertible Secured Notes Due 2015 [Member]
Debt Instrument [Line Items]
Stated interest rate										9.50%
Convertible Notes Payable [Member]
Debt Instrument [Line Items]
Convertible notes fair value		$ 0	$ 100,000
Line of Credit [Member] | Senior secured credit facility Expiring 2018 [Member]
Debt Instrument [Line Items]
Borrowing capacity under credit agreements				$ 250,000,000				$ 175,000,000
Senior Secured Notes [Member] | Senior Secured Notes Due 2018 [Member]
Debt Instrument [Line Items]
Stated interest rate				8.50%			8.50%
Buildings and Land Improvements [Member] | Minimum [Member]
Debt Instrument [Line Items]
Useful lives		10 years
Buildings and Land Improvements [Member] | Maximum [Member]
Debt Instrument [Line Items]
Useful lives		40 years
Machinery and equipment [Member] | Minimum [Member]
Debt Instrument [Line Items]
Useful lives		10 years
Machinery and equipment [Member] | Maximum [Member]
Debt Instrument [Line Items]
Useful lives		30 years
Vehicles [Member] | Minimum [Member]
Debt Instrument [Line Items]
Useful lives		1 year
Vehicles [Member] | Maximum [Member]
Debt Instrument [Line Items]
Useful lives		12 years
Other [Member] | Minimum [Member]
Debt Instrument [Line Items]
Useful lives		3 years
Other [Member] | Maximum [Member]
Debt Instrument [Line Items]
Useful lives		10 years
Bodin [Member]
Debt Instrument [Line Items]
Number of plants acquired | Processing_Facility									3
New York Sand And Stone, LLC [Member]
Debt Instrument [Line Items]
Number of Aggregate Distribution Terminals | terminal					2
Precast Concrete Operations in Pennsylvania [Member]
Debt Instrument [Line Items]
Remaining precast concrete operation held for sale | Business	1

ACQUISITIONS AND DISPOSITIONS52

ACQUISITIONS AND DISPOSITIONS (Narrative) (Details) shares in Thousands, $ in Thousands

Oct. 27, 2015USD ($)quarryMixer_TruckProcessing_Facility

Sep. 24, 2015USD ($)a

Jun. 02, 2015USD ($)Business

May. 29, 2015USD ($)Mixer_TruckProcessing_Facility

May. 21, 2015USD ($)Mixer_TruckProcessing_Facility

Apr. 01, 2015USD ($)Mixer_TruckProcessing_Facilityshares

Feb. 23, 2015USD ($)Mixer_TruckProcessing_Facility

Dec. 05, 2014USD ($)

Oct. 20, 2014USD ($)lease

Dec. 31, 2015USD ($)Processing_Facility

Sep. 30, 2015USD ($)

Jun. 30, 2015USD ($)

Mar. 31, 2015USD ($)

Dec. 31, 2014USD ($)Mixer_TruckProcessing_Facility

Sep. 30, 2014USD ($)

Jun. 30, 2014USD ($)

Mar. 31, 2014USD ($)

Dec. 31, 2015USD ($)quarryProcessing_FacilityBusiness

Dec. 31, 2014USD ($)Mixer_TruckProcessing_FacilityBusiness

Dec. 31, 2013USD ($)

Dec. 31, 2015USD ($)Processing_FacilityBusiness

Business Acquisition [Line Items]

Number of plants acquired | Processing_Facility

22

7

22

7

22

Number of quarries acquired | quarry

5

Number of businesses acquired | Business

8

9

Number of volumetric ready-mixed concrete facilities acquired | Processing_Facility

16

Number of volumetric ready-mixed concrete trucks acquired | Mixer_Truck

109

Acquired intangible assets

$ 95,931

$ 95,931

$ 95,931

Intangible amortization expense

11,200

$ 2,100

$ 2,000

Revenue

263,573

$ 295,111

$ 244,695

$ 171,338

$ 179,510

$ 197,589

$ 180,358

$ 146,257

974,717

703,714

598,155

Income from continuing operations

25,820

21,575

(18,273)

Number of businesses acquired, included in pro forma information | Business

12

Acquisitions in 2014 and 2015 [Member]

Business Acquisition [Line Items]

Acquired intangible assets

$ 95,900

95,900

$ 95,900

Intangible amortization expense

9,700

Revenue

232,500

16,600

Income from continuing operations

$ 13,400

800

Acquisitions in 2014 and 2015 [Member] | Minimum [Member]

Business Acquisition [Line Items]

Weighted Average Amortization Period (In Years)

1 year

Acquisitions in 2014 and 2015 [Member] | Maximum [Member]

Business Acquisition [Line Items]

Weighted Average Amortization Period (In Years)

25 years

Right Away Redy Mix, Inc. [Member]

Business Acquisition [Line Items]

Cash paid on acquisition

$ 18,000

Plus (less) post-closing adjustments

800

Plus (less) working capital adjustments

$ 1,100

Potential future earn-out payments, measurement period

6 years

Right Away Redy Mix, Inc. [Member] | Earn-out Payment [Member]

Business Acquisition [Line Items]

Potential future earn-out payments

$ 6,000

Custom-Crete [Member]

Business Acquisition [Line Items]

Cash paid on acquisition

$ 37,400

Plus (less) working capital adjustments

(1,600)

Consideration transferred, deferred payments/promissory notes

800

Mobile-Crete [Member]

Business Acquisition [Line Items]

Cash paid on acquisition

$ 21,500

Potential future earn-out payments, tied to WTI reaching certain levels

1,500

Mobile-Crete [Member] | Earn-out Payment [Member]

Business Acquisition [Line Items]

Potential future earn-out payments

$ 3,000

Custom-Crete and Mobile-Crete [Member]

Business Acquisition [Line Items]

Number of volumetric ready-mixed concrete facilities acquired | Processing_Facility

16

Number of volumetric ready-mixed concrete trucks acquired | Mixer_Truck

109

New York Sand And Stone, LLC [Member]

Business Acquisition [Line Items]

Cash paid on acquisition

15,200

Plus (less) working capital adjustments

$ (800)

Number of leases in acquisition | lease

2

Ferrara Bros. Building Materials Corp. [Member]

Business Acquisition [Line Items]

Cash paid on acquisition

$ 45,000

Plus (less) working capital adjustments

$ (900)

Potential future earn-out payments, measurement period

4 years

Consideration transferred, shares issued (in shares) | shares

442

Consideration transferred, shares issued, value

$ 15,100

Ferrara Bros. Building Materials Corp. [Member] | Earn-out Payment [Member]

Business Acquisition [Line Items]

Potential future earn-out payments

$ 35,000

Colonial Concrete Co. [Member]

Business Acquisition [Line Items]

Cash paid on acquisition

$ 15,000

Plus (less) post-closing adjustments

$ 200

DuBrook Concrete, Inc. [Member]

Business Acquisition [Line Items]

Cash paid on acquisition

$ 11,500

Potential future earn-out payments, measurement period

4 years

DuBrook Concrete, Inc. [Member] | Earn-out Payment [Member]

Business Acquisition [Line Items]

Potential future earn-out payments

$ 1,000

Wantage Stone [Member]

Business Acquisition [Line Items]

Cash paid on acquisition

$ 15,200

Consideration transferred, deferred payments/promissory notes

$ 3,000

Consideration transferred, deferred payments, term

3 years

Heavy Materials, LLC [Member]

Business Acquisition [Line Items]

Cash paid on acquisition

$ 21,700

Plus (less) post-closing adjustments

$ (800)

Number of mixer trucks acquired | Mixer_Truck

32

Number of plants acquired | Processing_Facility

4

Consideration transferred, deferred payments/promissory notes

$ 5,000

Consideration transferred, deferred payments, term

2 years

Number of quarries acquired | quarry

2

All Other [Member]

Business Acquisition [Line Items]

Cash paid on acquisition

$ 12,900

15,500

Number of plants acquired | Processing_Facility

1

1

1

Facilities acquired, number of locations | Processing_Facility

2

2

2

Consideration transferred, deferred payments/promissory notes

$ 1,900

$ 1,100

Consideration transferred, deferred payments, term

10 years

Number of businesses acquired | Business

2

6

Number of businesses acquired, excluded from pro forma information | Business

1

3

California [Member] | Right Away Redy Mix, Inc. [Member]

Business Acquisition [Line Items]

Number of facilities acquired | Processing_Facility

4

Number of mixer trucks acquired | Mixer_Truck

49

New York and Texas [Member]

Business Acquisition [Line Items]

Number of plants acquired | Processing_Facility

7

7

New York and New Jersey [Member] | Ferrara Bros. Building Materials Corp. [Member]

Business Acquisition [Line Items]

Number of facilities acquired | Processing_Facility

4

Number of mixer trucks acquired | Mixer_Truck

89

Number of plants acquired | Processing_Facility

6

New York and New Jersey [Member] | Colonial Concrete Co. [Member]

Business Acquisition [Line Items]

Number of mixer trucks acquired | Mixer_Truck

40

Number of plants acquired | Processing_Facility

4

Facilities acquired, number of locations | Processing_Facility

3

Washington, D.C. [Member] | DuBrook Concrete, Inc. [Member]

Business Acquisition [Line Items]

Number of mixer trucks acquired | Mixer_Truck

42

Number of plants acquired | Processing_Facility

3

Land [Member] | Wantage Stone [Member]

Business Acquisition [Line Items]

Area of real estate property (acres) | a

80

Mining Properties and Mineral Rights [Member] | Wantage Stone [Member]

Business Acquisition [Line Items]

Area of real estate property (acres) | a

77

Precast Concrete Operations in Pennsylvania [Member]

Business Acquisition [Line Items]

Remaining precast concrete operation held for sale | Business

1

Discontinued Operations, Held-for-sale or Disposed of by Sale [Member] | Precast Concrete Operations in Pennsylvania [Member]

Business Acquisition [Line Items]

Sale of fixed assets and inventory

$ 300

Sale of fixed assets and inventory - promissory note issued

1,200

Sale of fixed assets and inventory - promissory note issued, discount

$ 100

Note receivable, term

2 years

Note receivable, effective interest rate

3.19%

Aggregate products segment [Member]

Business Acquisition [Line Items]

Revenue

$ 34,191

$ 31,662

$ 21,715

Aggregate products segment [Member] | All Other [Member]

Business Acquisition [Line Items]

Number of businesses acquired | Business

1

ACQUISITIONS AND DISPOSITIONS53

ACQUISITIONS AND DISPOSITIONS (Schedule of Assets Acquired and Liabilities Assumed) (Details) - USD ($) shares in Thousands, $ in Thousands	Oct. 27, 2015	Sep. 24, 2015	May. 29, 2015	May. 21, 2015	Apr. 01, 2015	Feb. 23, 2015	Dec. 05, 2014	Oct. 20, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Goodwill									$ 100,204	$ 50,757	$ 11,646
Fair value of earn-out									30,119	5,344
Right Away Redy Mix, Inc. [Member]
Business Acquisition [Line Items]
Cash						$ 928
Accounts receivable						1,832
Inventory						348
Other current assets						196
Property, plant and equipment						9,696
Definite-lived intangible assets						7,036
Other long-term assets						0
Total assets acquired						20,036
Current liabilities						1,399
Long-term deferred income tax						5,929
Other long-term liabilities						0
Total liabilities assumed						7,328
Goodwill						11,086
Total consideration						23,794
Accounts receivable, gross contractual amount						2,200
Accounts receivable, allowance for doubtful accounts						400
Total consideration transferred						19,900
Fair value of earn-out						3,900			4,700
Total consideration transferred, cash						$ 18,000
Ferrara Bros. Building Materials Corp. [Member]
Business Acquisition [Line Items]
Cash					$ 67
Accounts receivable					13,224
Inventory					1,434
Other current assets					608
Property, plant and equipment					13,147
Definite-lived intangible assets					50,310
Other long-term assets					0
Total assets acquired					78,790
Current liabilities					6,944
Long-term deferred income tax					0
Other long-term liabilities					0
Total liabilities assumed					6,944
Goodwill					6,916
Total consideration					78,762
Accounts receivable, gross contractual amount					14,300
Accounts receivable, allowance for doubtful accounts					1,100
Total consideration transferred					44,100
Fair value of earn-out					$ 19,600				21,200
Consideration transferred, shares issued (in shares)					442
Consideration transferred, shares issued, value					$ 15,100
Total consideration transferred, cash					$ 45,000
Colonial Concrete Co. [Member]
Business Acquisition [Line Items]
Cash				$ 888
Accounts receivable				4,305
Inventory				378
Other current assets				126
Property, plant and equipment				6,325
Definite-lived intangible assets				4,640
Other long-term assets				153
Total assets acquired				16,815
Current liabilities				5,299
Long-term deferred income tax				0
Other long-term liabilities				0
Total liabilities assumed				5,299
Goodwill				3,680
Total consideration				15,196
Total consideration transferred, cash				$ 15,000
DuBrook Concrete, Inc. [Member]
Business Acquisition [Line Items]
Cash			$ 0
Accounts receivable			1,218
Inventory			349
Other current assets			739
Property, plant and equipment			2,394
Definite-lived intangible assets			4,473
Other long-term assets			0
Total assets acquired			9,173
Current liabilities			910
Long-term deferred income tax			0
Other long-term liabilities			59
Total liabilities assumed			969
Goodwill			3,887
Total consideration			12,091
Fair value of earn-out			600						700
Total consideration transferred, cash			$ 11,500
Wantage Stone [Member]
Business Acquisition [Line Items]
Cash		$ 0
Accounts receivable		0
Inventory		0
Other current assets		0
Property, plant and equipment		12,694
Definite-lived intangible assets		0
Other long-term assets		0
Total assets acquired		12,694
Current liabilities		0
Long-term deferred income tax		0
Other long-term liabilities		0
Total liabilities assumed		0
Goodwill		5,301
Total consideration		17,995
Fair value of earn-out		2,800
Total consideration transferred, cash		15,200
Consideration transferred, deferred payments/promissory notes		$ 3,000
Heavy Materials, LLC [Member]
Business Acquisition [Line Items]
Cash	$ 20
Accounts receivable	975
Inventory	1,449
Other current assets	92
Property, plant and equipment	6,095
Definite-lived intangible assets	0
Other long-term assets	47
Total assets acquired	8,678
Current liabilities	3,269
Long-term deferred income tax	0
Other long-term liabilities	0
Total liabilities assumed	3,269
Goodwill	20,243
Total consideration	25,652
Accounts receivable, gross contractual amount	4,300
Accounts receivable, allowance for doubtful accounts	3,300
Total consideration transferred	20,900
Fair value of earn-out	4,800
Total consideration transferred, cash	21,700
Consideration transferred, deferred payments/promissory notes	$ 5,000
Custom-Crete [Member]
Business Acquisition [Line Items]
Accounts receivable								$ 3,669
Inventory								522
Other current assets								0
Property, plant and equipment								11,802
Definite-lived intangible assets								11,078
Total assets acquired								27,071
Current liabilities								2,598
Other long-term liabilities								473
Total liabilities assumed								3,071
Goodwill								12,513
Total consideration								36,513
Total consideration transferred								35,800
Total consideration transferred, cash								37,400
Fair value of deferred payments								700
Consideration transferred, deferred payments/promissory notes								800
New York Sand And Stone, LLC [Member]
Business Acquisition [Line Items]
Accounts receivable								5,898
Inventory								1,161
Other current assets								134
Property, plant and equipment								1,442
Definite-lived intangible assets								5,042
Total assets acquired								13,677
Current liabilities								2,539
Other long-term liabilities								0
Total liabilities assumed								2,539
Goodwill								3,260
Total consideration								14,398
Total consideration transferred, cash								$ 15,200
Mobile-Crete [Member]
Business Acquisition [Line Items]
Accounts receivable							$ 2,578
Inventory							336
Other current assets							0
Property, plant and equipment							4,156
Definite-lived intangible assets							8,630
Total assets acquired							15,700
Current liabilities							1,284
Other long-term liabilities							0
Total liabilities assumed							1,284
Goodwill							8,685
Total consideration							23,101
Fair value of earn-out							1,600		100
Total consideration transferred, cash							$ 21,500
All Other [Member]
Business Acquisition [Line Items]
Cash									0
Accounts receivable									0	0
Inventory									668	295
Other current assets									0	102
Property, plant and equipment									5,153	7,400
Definite-lived intangible assets									0	4,722
Other long-term assets									0
Total assets acquired									5,821	12,519
Current liabilities									91	0
Long-term deferred income tax									0
Other long-term liabilities									0	0
Total liabilities assumed									91	0
Goodwill									8,933	4,050
Total consideration										16,569
Total consideration									14,663
Total consideration transferred									13,000
Total consideration transferred, cash									12,900	15,500
Fair value of deferred payments									1,700
Consideration transferred, deferred payments/promissory notes									$ 1,900	$ 1,100

ACQUISITIONS AND DISPOSITIONS54

ACQUISITIONS AND DISPOSITIONS (Schedule of Finite-Lived Intangible Assets, Future Amortization Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Fair Value At Acquisition Date, intangible assets	$ 95,931
2,016	11,956
2,017	11,350
2,018	10,902
2,019	9,493
2,020	7,857
Thereafter	42,718
Net	94,276	$ 31,720
Acquisitions in 2014 and 2015 [Member]
Business Acquisition [Line Items]
Fair Value At Acquisition Date, intangible assets	95,900
2,016	10,476
2,017	9,870
2,018	9,422
2,019	8,013
2,020	6,377
Thereafter	40,005
Net	$ 84,163
Trade names [Member]
Business Acquisition [Line Items]
Weighted Average Amortization Period (In Years)	22 years 11 months 23 days
Fair Value At Acquisition Date, definite-lived intangible assets	$ 39,002
Net	$ 38,242	3,870
Customer relationships [Member]
Business Acquisition [Line Items]
Weighted Average Amortization Period (In Years)	8 years 3 months 14 days
Fair Value At Acquisition Date, definite-lived intangible assets	$ 32,469
Net	$ 38,030	20,326
Non-competes [Member]
Business Acquisition [Line Items]
Weighted Average Amortization Period (In Years)	4 years 11 months 1 day
Fair Value At Acquisition Date, definite-lived intangible assets	$ 10,167
Net	$ 7,956	4,203
Leasehold interests [Member]
Business Acquisition [Line Items]
Weighted Average Amortization Period (In Years)	12 years 2 months 26 days
Fair Value At Acquisition Date, definite-lived intangible assets	$ 7,525
Net	$ 6,857	$ 3,321
Favorable contract [Member]
Business Acquisition [Line Items]
Weighted Average Amortization Period (In Years)	3 years 6 months
Fair Value At Acquisition Date, definite-lived intangible assets	$ 3,650
Net	$ 2,781
Backlog [Member]
Business Acquisition [Line Items]
Weighted Average Amortization Period (In Years)	1 year
Fair Value At Acquisition Date, definite-lived intangible assets	$ 1,640
Net	410
Land rights [Member]
Business Acquisition [Line Items]
Fair Value At Acquisition Date, indefinite-lived intangible assets	$ 1,478

ACQUISITIONS AND DISPOSITIONS55

ACQUISITIONS AND DISPOSITIONS (Business Acquisition, Pro Forma Information) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Business Combinations [Abstract]
Revenue from continuing operations	$ 1,033,058	$ 947,357
Net income	$ 29,885	$ 23,317
Income per share, basic (in dollars per share)	$ 2.12	$ 1.72
Income per share, diluted (in dollars per share)	$ 1.92	$ 1.68

ACQUISITIONS AND DISPOSITIONS56

ACQUISITIONS AND DISPOSITIONS (Adjustments to Pro Forma Net Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Decrease in intangible amortization expense	$ 11,200	$ 2,100	$ 2,000
Increase in interest expense	21,734	20,431	11,332
Increase (decrease) in income tax expense	(30,135)	2,156	$ 1,168
Net adjustments	(29,885)	(23,317)
Acquisition-related Costs [Member]
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Decrease in intangible amortization expense	(243)	(11,040)
Increase in depreciation expense	231	755
Exclusion of buyer transaction costs	2,774	1,941
Exclusion of seller transaction costs	46	0
Exclusion of pension expense for pension plan acquired	212	737
Exclusion of segment results for segment not acquired	(99)	(547)
Increase in interest expense	(243)	(980)
Increase (decrease) in income tax expense	744	(3,550)
Net adjustments	$ 3,422	$ (12,684)

DISCONTINUED OPERATIONS (Detail

DISCONTINUED OPERATIONS (Details) $ in Thousands	Jun. 02, 2015USD ($)Business	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on impairment of long-lived assets		$ 0	$ 900	$ 0
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Revenue		5,523	8,920	16,914
Depreciation, depletion and amortization, or DD&A		0	0	(148)
Operating expenses, excluding DD&A, and other income		(5,830)	(9,481)	(18,448)
Loss from discontinued operations		(307)	(561)	(1,682)
(Loss) gain on disposal of assets		(193)	640	(219)
Loss on impairment of long-lived assets		0	(900)	0
Loss from discontinued operations, before income taxes		(500)	(821)	(1,901)
Income tax (benefit) expense		(180)	172	(45)
Loss from discontinued operations		(320)	(993)	(1,856)
Cash flows provided by (used in) operating activities - discontinued operations		(400)	(1,500)	2,300
Cash flows provided by (used in) investing activities - discontinued operations		400	1,500	$ (2,300)
Disposal Group, Including Discontinued Operation, Balance Sheet Disclosures [Abstract]
Trade accounts receivable, net			1,337
Inventories			704
Other current assets			897
Property, plant, and equipment, net			841
Total assets held for sale		$ 0	3,779
Accounts payable			398
Accrued liabilities			504
Total liabilities held for sale			902
Precast Concrete Operations in Pennsylvania [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Remaining precast concrete operation held for sale | Business	1
Discontinued Operations, Held-for-sale or Disposed of by Sale [Member] | Precast Concrete Operations in Pennsylvania [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sale of fixed assets and inventory	$ 300
Sale of fixed assets and inventory - promissory note issued	1,200
Sale of fixed assets and inventory - promissory note issued, discount	100
(Loss) gain on disposal	$ (200)
Discontinued Operations, Held-for-sale or Disposed of by Sale [Member] | California Precast Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sale of fixed assets and inventory			1,500
(Loss) gain on disposal			$ 600

GOODWILL AND INTANGIBLE ASSET58

GOODWILL AND INTANGIBLE ASSETS, NET (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible amortization expense	$ 11.2	$ 2.1	$ 2

GOODWILL AND INTANGIBLE ASSET59

GOODWILL AND INTANGIBLE ASSETS, NET (Schedule of Changes in Goodwill By Reportable Segment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Goodwill [Roll Forward]
Goodwill beginning	$ 50,757	$ 11,646
Acquisitions	60,046	39,111
All other purchase price allocation adjustments (See Note 2)	(10,599)
Goodwill ending	100,204	50,757
Ready-mixed Concrete Segment [Member]
Goodwill [Roll Forward]
Goodwill beginning	47,757	11,646
Acquisitions	46,062	36,111
All other purchase price allocation adjustments (See Note 2)	(10,861)
Goodwill ending	82,958	47,757
Aggregate Products Segment [Member]
Goodwill [Roll Forward]
Goodwill beginning	0	0
Acquisitions	13,984	0
All other purchase price allocation adjustments (See Note 2)	0
Goodwill ending	13,984	0
Other Segments [Member]
Goodwill [Roll Forward]
Goodwill beginning	3,000	0
Acquisitions	0	3,000
All other purchase price allocation adjustments (See Note 2)	262
Goodwill ending	$ 3,262	$ 3,000

GOODWILL AND INTANGIBLE ASSET60

GOODWILL AND INTANGIBLE ASSETS, NET (Schedule of Finite-Lived Intangible Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross	$ 109,253	$ 35,543
Accumulated Amortization	(14,977)	(3,823)
Net	$ 94,276	$ 31,720
Weighted Average Remaining Life (in years)	13 years 25 days	7 years 10 months 28 days
Intangible assets, gross	$ 110,731
Intangible assets, net	95,754	$ 31,720
Land rights [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	1,478
Trade names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross	40,302	4,200
Accumulated Amortization	(2,060)	(330)
Net	$ 38,242	$ 3,870
Weighted Average Remaining Life (in years)	22 years 14 days	9 years 3 months 22 days
Customer relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross	$ 45,969	$ 23,540
Accumulated Amortization	(7,939)	(3,214)
Net	$ 38,030	$ 20,326
Weighted Average Remaining Life (in years)	7 years 4 months 2 days	8 years 22 days
Non-competes [Member]
Finite-Lived Intangible Assets [Line Items]
Gross	$ 10,167	$ 4,421
Accumulated Amortization	(2,211)	(218)
Net	$ 7,956	$ 4,203
Weighted Average Remaining Life (in years)	3 years 10 months 13 days	4 years 6 months 29 days
Leasehold interests [Member]
Finite-Lived Intangible Assets [Line Items]
Gross	$ 7,525	$ 3,382
Accumulated Amortization	(668)	(61)
Net	$ 6,857	$ 3,321
Weighted Average Remaining Life (in years)	10 years 5 months 26 days	9 years 7 months 17 days
Favorable contract [Member]
Finite-Lived Intangible Assets [Line Items]
Gross	$ 3,650
Accumulated Amortization	(869)
Net	$ 2,781
Weighted Average Remaining Life (in years)	2 years 8 months 1 day
Backlog [Member]
Finite-Lived Intangible Assets [Line Items]
Gross	$ 1,640
Accumulated Amortization	(1,230)
Net	$ 410
Weighted Average Remaining Life (in years)	3 months

GOODWILL AND INTANGIBLE ASSET61

GOODWILL AND INTANGIBLE ASSETS, NET (Schedule of Finite-Lived Intangible Assets, Future Amortization Expense) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2,016	$ 11,956
2,017	11,350
2,018	10,902
2,019	9,493
2,020	7,857
Thereafter	42,718
Net	$ 94,276	$ 31,720

INVENTORIES (Schedule of Invent

INVENTORIES (Schedule of Inventory) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Inventory Disclosure [Abstract]
Raw materials	$ 33,792	$ 29,263
Building materials for resale	1,736	1,479
Other	1,198	980
Inventory, Net	$ 36,726	$ 31,722

PROPERTY, PLANT AND EQUIPMENT63

PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 350,602	$ 249,486
Less: accumulated depreciation and depletion	(102,479)	(72,962)
Property, Plant and Equipment, Net	248,123	176,524	$ 138,560
Mineral Properties, Net	28,100	11,300
Depreciation, depletion and amortization	32,400	21,800	$ 16,900
Land and mineral deposits [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	69,265	47,618
Buildings and improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	17,198	16,648
Machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	131,209	95,710
Mixers, trucks and other vehicles [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	117,448	80,001
Other [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	227	242
Construction in progress [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	15,255	9,267
Mixer Trucks [Member]
Property, Plant and Equipment [Line Items]
Capital Leased Assets, Gross	20,500	8,600
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation (less than for 2013)	$ 1,300	$ 600

ALLOWANCE FOR DOUBTFUL ACCOUN64

ALLOWANCE FOR DOUBTFUL ACCOUNTS AND CUSTOMER DISPUTES (Schedule of Activity in Allowance for Doubtful Accounts) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Allowance for Doubtful Accounts Receivable [Roll Forward]
Balance, beginning of period	$ 3,726	$ 2,813
Provision for doubtful accounts and customer disputes	4,198	1,924
Uncollectible receivables written off, net of recoveries	(1,799)	(1,011)
Balance, end of period	$ 6,125	$ 3,726

ACCRUED LIABILITIES (Schedule o

ACCRUED LIABILITIES (Schedule of Accrued Liabilities is as Follows) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Payables and Accruals [Abstract]
Accrued materials	$ 22,428	$ 14,319
Accrued insurance reserves	15,341	10,512
Accrued compensation and benefits	15,024	11,251
Accrued property, sales and other taxes	9,058	5,235
Deferred consideration	4,774	0
Contingent consideration, current portion	2,635	2,250
Deferred rent	1,838	2,126
Accrued interest	1,500	1,487
Other	7,398	3,211
Accrued liabilities	$ 79,996	$ 50,391

DEBT (Schedule of Debt and Capi

DEBT (Schedule of Debt and Capital Leases) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Capital leases	$ 16,555	$ 7,395
Total debt	281,749	220,437
Less: current maturities	9,386	5,104
Long-term debt, net of current maturities	272,363	215,333
Senior Secured Notes Due 2018 [Member]
Debt Instrument [Line Items]
Long-term debt	200,000	200,000
Senior secured credit facility due 2018 [Member]
Debt Instrument [Line Items]
Long-term debt	45,000	0
Convertible secured notes due 2015, net of discount [Member]
Debt Instrument [Line Items]
Long-term debt	0	117
Other financing [Member]
Debt Instrument [Line Items]
Long-term debt	$ 20,194	$ 12,925

DEBT (Schedule of Principal Amo

DEBT (Schedule of Principal Amounts Due Under Debt Agreements for the Next Five Years) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Debt Disclosure [Abstract]
2,016	$ 9,386
2,017	9,389
2,018	254,037
2,019	6,191
2,020	2,633
Thereafter	113
Total debt	$ 281,749	$ 220,437

DEBT (Senior Secured Notes due

DEBT (Senior Secured Notes due 2018) (Narrative) (Details) - USD ($)	Nov. 22, 2013	Dec. 31, 2015	Dec. 31, 2014	Nov. 18, 2015	Nov. 30, 2013
Senior Secured Notes Due 2015 [Member]
Debt Instrument [Line Items]
Debt, face amount					$ 61,100,000
Senior Secured Notes [Member] | Senior Secured Notes Due 2018 [Member]
Debt Instrument [Line Items]
Debt, face amount	$ 200,000,000
Stated interest rate	8.50%			8.50%
Offering price (percentage)	100.00%
Consolidated coverage ratio	2
Interest expense		$ 17,000,000	$ 17,000,000
Unamortized deferred financing fees		$ 4,100,000	$ 5,500,000
Senior Secured Notes [Member] | Senior Secured Notes Due 2015 [Member]
Debt Instrument [Line Items]
Stated interest rate		9.50%

DEBT (Senior Secured Credit Fac

DEBT (Senior Secured Credit Facility) (Narrative) (Details)	Nov. 18, 2015USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Nov. 22, 2013	Oct. 29, 2013USD ($)
Debt Instrument [Line Items]
Capital lease obligation		$ 4,000,000	$ 1,600,000
Senior Secured Credit Facility [Member]
Debt Instrument [Line Items]
Unused borrowing capacity		$ 131,200,000	109,800,000
Senior secured credit facility due 2018 [Member]
Debt Instrument [Line Items]
Outstanding borrowings			0
Duration in which interest rate is applicable	30 days
Fronting fee percentage	0.125%
Commitment fee percent, minimum	0.25%
Commitment fee percent, maximum	0.375%
Percent of unused aggregate Revolver Commitments	50.00%
Limitation on borrowing base, accounts receivable, percentage	90.00%
Limitation on borrowing base, accounts receivable, reduction in percentage	85.00%
Limitation on borrowing base, percentage of eligible inventory	70.00%
Limitation on borrowing base, inventory product, percentage	90.00%
Limitation on borrowing base, amount	$ 10,000,000
Limitation on borrowing base, net orderly liquidation value, percentage	85.00%
Limitation on borrowing base, cost of newly acquired trucks net of a provisions for depreciation on eligible trucks and liquidation of eligible trucks, percentage	80.00%
Reduction to limitation on borrowing base, newly acquired trucks to be reduced by orderly liquidation value of eligible trucks, percentage	85.00%
Reduction to limitation on borrowing base, newly acquired trucks to be reduced by depreciation of eligible trucks since last appraisal, percentage	85.00%
Limitation on borrowing base, net orderly liquidation value of eligible inventory, percentage	85.00%
Limitation on borrowing base, net orderly liquidation value of eligible machinery	85.00%
Limitation on borrowing base, depreciation amount applicable to eligible machinery, percentage	85.00%
Limitation on borrowing base, borrowing base attributable to eligible truck and eligible machinery shall not exceed, percent of borrowing base	30.00%
Line of credit facility, reserves, percent of borrowing base	5.00%
Limitation on borrowing base, ABL cap amount, percent of aggregate Revolver commitments (no less than)	110.00%
Fixed charge coverage ratio	1
Coverage ratio, measurement period	12 months
Fixed charge coverage ratio		3.58
Interest expense		$ 400,000	300,000
Unamortized deferred financing fees		2,000,000	1,300,000
Senior secured credit facility due 2018 [Member] | Letter of Credit [Member]
Debt Instrument [Line Items]
Borrowing capacity under credit agreements	$ 30,000,000
Letters of credit, amount available		11,300,000	11,300,000
Available borrowing capacity	30,000,000
Senior secured credit facility due 2018 [Member] | Swingline Loan [Member]
Debt Instrument [Line Items]
Borrowing capacity under credit agreements	$ 15,000,000
Senior secured credit facility due 2018 [Member] | London Interbank Offered Rate Plus Percentage [Member]
Debt Instrument [Line Items]
Basis spread on variable rates basis loans	1.00%
Senior secured credit facility due 2018 [Member] | Federal Funds Rate Plus Percentage [Member]
Debt Instrument [Line Items]
Basis spread on variable rates basis loans	0.50%
Line of Credit [Member] | Senior secured credit facility due 2018 [Member]
Debt Instrument [Line Items]
Borrowing capacity under credit agreements	$ 250,000,000				$ 175,000,000
Number of days prior to maturity date	60 days
Maximum borrowing capacity	$ 100,000,000
Outstanding borrowings		$ 45,000,000
Weighted average interest rate		1.77%
Line of Credit [Member] | Senior secured credit facility due 2018 [Member] | Base Rate [Member] | Minimum [Member]
Debt Instrument [Line Items]
Basis spread on variable rates basis loans	0.00%
Line of Credit [Member] | Senior secured credit facility due 2018 [Member] | Base Rate [Member] | Maximum [Member]
Debt Instrument [Line Items]
Basis spread on variable rates basis loans	0.50%
Line of Credit [Member] | Senior secured credit facility due 2018 [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]
Debt Instrument [Line Items]
Basis spread on variable rates basis loans	1.25%
Line of Credit [Member] | Senior secured credit facility due 2018 [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]
Debt Instrument [Line Items]
Basis spread on variable rates basis loans	1.75%
Senior Secured Notes [Member] | Senior Secured Notes Due 2018 [Member]
Debt Instrument [Line Items]
Stated interest rate	8.50%			8.50%
Interest expense		$ 17,000,000	17,000,000
Unamortized deferred financing fees		$ 4,100,000	$ 5,500,000
Discretionary Over-Advances [Member] | Senior secured credit facility due 2018 [Member]
Debt Instrument [Line Items]
Borrowing capacity under credit agreements	$ 25,000,000

DEBT (Senior Secured Notes du70

DEBT (Senior Secured Notes due 2015) (Narrative) (Details) - USD ($)	Mar. 22, 2013	Nov. 30, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Aug. 31, 2010
Debt Instrument [Line Items]
Repayments of debt		$ 61,100,000	$ 117,000	$ 0	$ 61,113,000
Senior Secured Notes Due 2015 [Member]
Debt Instrument [Line Items]
Amount of debt to be surrendered in exchange transaction	$ 69,300,000
Debt, face amount		$ 61,100,000
Convertible Secured Notes Due 2015 [Member]
Debt Instrument [Line Items]
Debt, face amount	6,500,000					$ 55,000,000
Extinguishment of debt					$ 48,500,000
Proceeds from Interest Received	$ 300,000

DEBT (Convertible Notes due 201

DEBT (Convertible Notes due 2015) (Narrative) (Details) - USD ($) shares in Millions	1 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Nov. 30, 2013	Mar. 22, 2013	Aug. 31, 2010
Common Stock [Member]
Debt Instrument [Line Items]
Conversion of convertible debt (in shares)				0.6
Convertible Debt [Member]
Debt Instrument [Line Items]
Extinguishment of debt	$ 48,500,000			$ 6,400,000
Convertible Secured Notes Due 2015 [Member]
Debt Instrument [Line Items]
Extinguishment of debt				48,500,000
Debt, face amount						$ 6,500,000	$ 55,000,000
Interest expense		$ 0	$ 0	$ 2,100,000
Senior Secured Notes Due 2015 [Member]
Debt Instrument [Line Items]
Debt, face amount					$ 61,100,000

DEBT (Capital Leases and Other

DEBT (Capital Leases and Other Financing) (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2015USD ($)Note	Dec. 31, 2014USD ($)
Debt Instrument [Line Items]
Capital lease obligation	$ 4	$ 1.6
Other Financing [Member]
Debt Instrument [Line Items]
Weighted average interest rate	3.07%	3.49%
Notes Payable, Other Payables [Member]
Debt Instrument [Line Items]
Debt, face amount	$ 1.4
Number of notes issued | Note	4
Notes Payable, Other Payables [Member] | Minimum [Member]
Debt Instrument [Line Items]
Stated interest rate	3.49%
Debt, term	1 year
Notes Payable, Other Payables [Member] | Maximum [Member]
Debt Instrument [Line Items]
Stated interest rate	3.75%
Debt, term	9 years
Notes Payable, Other Payables [Member] | Diamler [Member]
Debt Instrument [Line Items]
Debt, face amount	$ 25.3
Debt, term	5 years
Notes Payable, Other Payables [Member] | Diamler [Member] | Minimum [Member]
Debt Instrument [Line Items]
Stated interest rate	2.50%
Notes Payable, Other Payables [Member] | Diamler [Member] | Maximum [Member]
Debt Instrument [Line Items]
Stated interest rate	3.18%
Notes Payable, Other Payables [Member] | Various Lenders [Member]
Debt Instrument [Line Items]
Debt, face amount	$ 20.2
Notes Payable, Other Payables [Member] | Various Lenders [Member] | Minimum [Member]
Debt Instrument [Line Items]
Stated interest rate	2.60%
Debt, term	4 years
Notes Payable, Other Payables [Member] | Various Lenders [Member] | Maximum [Member]
Debt Instrument [Line Items]
Stated interest rate	4.80%
Debt, term	5 years

EXTINGUISHMENT OF DEBT (Narrati

EXTINGUISHMENT OF DEBT (Narrative) (Details) - USD ($) $ in Thousands, shares in Millions	1 Months Ended	3 Months Ended		12 Months Ended
	Mar. 31, 2013	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Nov. 30, 2013	Nov. 22, 2013
Extinguishment of Debt [Line Items]
Gain (loss) on extinguishment of debt				$ 0	$ 11	$ 985
Deferred finance costs								$ 8,400
Convertible Debt [Member]
Extinguishment of Debt [Line Items]
Write off of deferred financing costs	$ 2,400		$ 300
Write-off of embedded derivative on extinguishment of debt	26,600		3,700
Write-off of unamortized debt discount	7,300		800
Gain (loss) on extinguishment of debt	4,300		$ (1,700)
Common Stock [Member]
Extinguishment of Debt [Line Items]
Conversion of convertible debt (in shares)						0.6
Senior Secured Notes Due 2013 [Member]
Extinguishment of Debt [Line Items]
Write off of deferred financing costs		$ 1,600
Convertible Debt [Member]
Extinguishment of Debt [Line Items]
Extinguishment of debt	48,500					$ 6,400
Senior Notes [Member]
Extinguishment of Debt [Line Items]
Debt, face amount	$ 61,100
Senior Secured Notes Due 2015 [Member]
Extinguishment of Debt [Line Items]
Debt, face amount							$ 61,100

DERIVATIVES (Details)

DERIVATIVES (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)instrument	Dec. 31, 2014USD ($)instrument	Dec. 31, 2013USD ($)instrument
Derivative [Line Items]
Derivative loss	$ (60,016)	$ (3,556)	$ (29,964)
Warrants [Member]
Derivative [Line Items]
Current derivative liabilities	$ 67,401	$ 25,246
Not Designated as Hedging Instrument [Member] | Warrants [Member]
Derivative [Line Items]
Number of Shares (in shares) | instrument	2,361,000	2,999,000	3,000,000
Derivative Loss [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative loss	$ (60,016)	$ (3,556)	$ (29,964)
Derivative Loss [Member] | Not Designated as Hedging Instrument [Member] | Warrants [Member]
Derivative [Line Items]
Derivative loss	(60,016)	(3,556)	(16,833)
Derivative Loss [Member] | Not Designated as Hedging Instrument [Member] | Embedded Derivative Financial Instruments [Member]
Derivative [Line Items]
Derivative loss	0	0	$ (13,131)
Current derivative liabilities [Member] | Not Designated as Hedging Instrument [Member] | Warrants [Member]
Derivative [Line Items]
Current derivative liabilities	$ 67,401	$ 25,246

OTHER LONG-TERM OBLIGATIONS A75

OTHER LONG-TERM OBLIGATIONS AND DEFERRED CREDITS (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Contingent consideration obligation	$ 27,500,000	$ 3,000,000
Deferred payment obligation	$ 5,300,000	$ 0
Minimum [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Contingent consideration, term	2 years
Long term incentive plan, term	1 year
Maximum [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Contingent consideration, term	6 years
Long term incentive plan, term	10 years

FAIR VALUE DISCLOSURES (Schedul

FAIR VALUE DISCLOSURES (Schedule of Liabilities Categorized by Fair Value Measurements Hierarchy) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	May. 29, 2015	Apr. 01, 2015	Feb. 23, 2015	Dec. 31, 2014	Dec. 05, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	$ 30,119				$ 5,344
Derivatives and contingent consideration	97,520				30,590
Bode Gravel and Bode Concrete LLC [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	$ 3,500				5,300
Fair value discount rate	7.00%
Mobile-Crete [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	$ 100					$ 1,600
Fair value discount rate	3.50%
Right Away Redy Mix, Inc. [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	$ 4,700			$ 3,900
Fair value discount rate	8.50%
Ferrara Bros. Building Materials Corp. [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	$ 21,200		$ 19,600
Fair value discount rate	10.53%
DuBrook Concrete, Inc. [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	$ 700	$ 600
Fair value discount rate	15.75%
Warrants [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative	$ 67,401				25,246
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	0				0
Derivatives and contingent consideration	0				0
Level 1 [Member] | Warrants [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative	0				0
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	0				0
Derivatives and contingent consideration	67,401				0
Level 2 [Member] | Warrants [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative	67,401				0
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes payable	30,119				5,344
Derivatives and contingent consideration	30,119				30,590
Level 3 [Member] | Warrants [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative	$ 0				$ 25,246

FAIR VALUE DISCLOSURES (Sched77

FAIR VALUE DISCLOSURES (Schedule of Changes in Level 3 Fair Value Measurements) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ 5,300
Ending Balance		$ 5,300
Warrants [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	25,246	21,690
Acquisitions	0
Total losses included in earnings	19,551	3,560
Payment on contingent consideration	0	0
Write-off of derivative on exercised Warrants	(4)	(4)
Issuances of equity, net of cash proceeds	(56)
Transfer out	(44,737)
Ending Balance	0	25,246
Contingent Consideration [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	5,344	7,000
Acquisitions	25,707
Total losses included in earnings	932	0
Payment on contingent consideration	(1,864)	(1,656)
Write-off of derivative on exercised Warrants	0	0
Issuances of equity, net of cash proceeds	0
Transfer out	0
Ending Balance	$ 30,119	$ 5,344
Minimum [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value discount rate	3.50%
Maximum [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value discount rate	15.75%

STOCKHOLDERS' EQUITY (Schedule

STOCKHOLDERS' EQUITY (Schedule of Common Stock Outstanding) (Details) - shares	Dec. 31, 2015	Dec. 31, 2014
Equity [Abstract]
Shares authorized (in shares)	100,000,000	100,000,000
Shares outstanding at end of period (in shares)	14,871,000	13,978,000
Shares held in treasury (in shares)	842,000	697,000

STOCKHOLDERS' EQUITY (Narrative

STOCKHOLDERS' EQUITY (Narrative) (Details) $ / shares in Units, $ in Thousands	May. 19, 2014shares	Jun. 30, 2015USD ($)shares	Jun. 30, 2014USD ($)$ / sharesshares	Dec. 31, 2015USD ($)$ / sharesshares	Dec. 31, 2014USD ($)$ / sharesshares	Dec. 31, 2013USD ($)shares	May. 31, 2014USD ($)
Class of Stock [Line Items]
Common stock, authorized (in shares)				100,000,000	100,000,000
Common stock, par value (in dollars per share) | $ / shares				$ 0.001	$ 0.001
Preferred stock, authorized (in shares)				10,000,000	10,000,000
Preferred stock, par value (in dollars per share) | $ / shares				$ 0.001	$ 0.001
Preferred stock, issued (in shares)				0	0
Preferred Stock, Shares Outstanding				0	0
Common stock issuance (in shares)		442,000
Common stock issuance | $		$ 15,100		$ 15,089
Value of treasury stock withheld | $				$ 6,330	$ 2,056	$ 4,913
Common Stock [Member]
Class of Stock [Line Items]
Common stock issuance (in shares)				442,000
Common stock issuance | $				$ 1
Shares withheld to satisfy tax obligations (in shares)				145,000	83,000	296,000
Treasury Stock [Member]
Class of Stock [Line Items]
Value of treasury stock withheld | $				$ 6,330	$ 2,056	$ 4,913
Beneficial Owner [Member] | Whippoorwill Associates, Inc. [Member]
Class of Stock [Line Items]
Number of shares acquired for all transactions (in shares)	3,000,000
Percentage ownership after all transactions	0.21
Legal Fees | $			$ 100
Repurchase of Treasury Shares [Member] | Beneficial Owner [Member] | Whippoorwill Associates, Inc. [Member]
Class of Stock [Line Items]
Shares withheld to satisfy tax obligations (in shares)			200,000	0
Value of treasury stock withheld | $			$ 4,800
Repurchase of shares (in dollars per share) | $ / shares			$ 24.12
May 2014 Authorized Program [Member] | Common Stock [Member]
Class of Stock [Line Items]
Stock Repurchase Program, Authorized Amount | $							$ 50,000

WARRANTS (Narrative) (Details)

WARRANTS (Narrative) (Details) $ / shares in Units, shares in Millions, $ in Millions	Aug. 31, 2010Tranch$ / sharesshares	Dec. 31, 2015USD ($)
Class of Warrant or Right [Line Items]
Number of tranches | Tranch	2
Term of warrants	7 years
Percentage of consideration paid in the form of securities	90.00%
Adjustment to exercise price (in dollars per share)	$ 0.05
Class A warrant [Member]
Class of Warrant or Right [Line Items]
Warrants outstanding (in shares) | shares	1.5
Investment warrants, exercise price (in dollars per share)	$ 22.69
Class B warrant [Member]
Class of Warrant or Right [Line Items]
Warrants outstanding (in shares) | shares	1.5
Investment warrants, exercise price (in dollars per share)	$ 26.68
Warrants [Member] | Class A warrant [Member]
Class of Warrant or Right [Line Items]
Derivative liability | $		$ 1.1
Warrants [Member] | Class B warrant [Member]
Class of Warrant or Right [Line Items]
Derivative liability | $		$ 1.3

INCOME TAXES (Schedule of Effec

INCOME TAXES (Schedule of Effective Income Tax Rate Reconciliation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Tax (benefit) expense at statutory rate	$ (1,510)	$ 8,306	$ (5,987)
Rates different than statutory	(165)	0	0
State income taxes	(4,282)	2,797	1,037
Nondeductible items	1,025	1,304	970
Valuation allowance	(29,519)	(9,752)	495
Unrecognized tax benefit	390	369	(3,732)
Derivatives and note discount	0	(911)	8,369
Capital loss carryforward expiration	3,485	0	0
Depletion	(47)	0	0
Other	488	43	16
Income tax (benefit) expense from continuing operations	$ (30,135)	$ 2,156	$ 1,168
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Tax (benefit) expense at statutory rate	35.00%	35.00%	35.00%
Rates different than statutory	3.80%	0.00%	0.00%
State income taxes	99.20%	11.80%	(6.10%)
Nondeductible items	(23.70%)	5.50%	(5.70%)
Valuation allowance	684.10%	(41.10%)	(2.90%)
Unrecognized tax benefit	(9.00%)	1.50%	21.80%
Derivatives and note discount	0.00%	(3.80%)	(48.90%)
Capital loss carryforward expiration	(80.80%)	0.00%	0.00%
Depletion	1.10%	0.00%	0.00%
Other	(11.30%)	0.20%	0.00%
Income tax (benefit) expense from continuing operations	698.40%	9.10%	(6.80%)

INCOME TAXES (Schedule of Compo

INCOME TAXES (Schedule of Components of Income Tax Expense (Benefit)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current:
Federal	$ 5,493	$ 487	$ 130
State	1,843	1,674	1,144
Foreign	(43)	0	0
Current Income Tax Expense (Benefit)	7,293	2,161	1,274
Deferred:
Federal	(29,712)	(5)	0
State	(7,779)	0	(106)
Foreign	63	0	0
Deferred income tax expense (benefit)	(37,428)	(5)	(106)
Income tax (benefit) expense from continuing operations	(30,135)	2,156	1,168
Discontinued operations	(180)	172	(45)
Income tax (benefit) expense	$ (30,315)	$ 2,328	$ 1,123

INCOME TAXES (Schedule of Defer

INCOME TAXES (Schedule of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets:
Derivatives	$ 24,849	$ 8,463
Goodwill and other intangibles	4,165	6,747
Receivables	1,705	988
Inventory	4,114	4,264
Accrued insurance	5,170	4,021
Depletion	366	490
Deferred revenue	358	332
Stock compensation	769	986
Charitable contribution carryover	0	166
Other accrued expenses	7,465	5,224
Capital loss carryforward expiration	0	3,736
Net operating loss carryforwards	5,699	10,039
Other	2,024	1,507
Total gross deferred tax assets	56,684	46,963
Valuation allowance	(4,131)	(34,937)
Net deferred tax assets	52,553	12,026
Deferred income tax liabilities:
Property, plant and equipment, net	21,678	16,566
Total gross deferred tax liabilities	21,678	16,566
Net deferred tax asset	$ 30,875
Net deferred tax liability		$ (4,540)

INCOME TAXES (Schedule of Def84

INCOME TAXES (Schedule of Deferred Tax Assets and Liabilities) (Allocated) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Current deferred tax asset, net	$ 0	$ 1,887
Long-term deferred tax asset, net	30,875	0
Long-term deferred tax liability, net	0	6,427
Net deferred tax asset	$ 30,875
Net deferred tax liability		$ (4,540)

INCOME TAXES (Schedule of Unrec

INCOME TAXES (Schedule of Unrecognized Tax Benefits Roll Forward) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning Balance	$ 3,636	$ 3,489	$ 6,598
Additions for tax positions related to current year	464	475	311
Additions for tax positions related to prior years	0	100	393
Reductions due to lapse of statute of limitations	0	(63)	(3,813)
Settlements	0	(365)	0
Ending Balance	$ 4,100	$ 3,636	$ 3,489

INCOME TAXES (Narrative) (Detai

INCOME TAXES (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Aug. 31, 2010
Operating Loss Carryforwards [Line Items]
Deferred tax assets, valuation allowance	$ 4,131	$ 34,937
Net deferred tax asset	(30,875)
Deferred tax liability		4,540
Increase (decrease) in deferred tax assets valuation allowance	(29,500)
Indefinitely reinvested foreign earnings	100
Operating loss carryforwards subject to IRC section 382 limitation	5,600
Unrecognized tax benefits	4,100	3,636	$ 3,489	$ 6,598
Unrecognized tax benefits, interest and penalties (less than)	100	100	$ 100
Unrecognized tax benefits, interest and penalties accrued	$ 300	$ 200
Senior Subordinate Notes Due 2014 [Member]
Operating Loss Carryforwards [Line Items]
Stated interest rate					8.375%

STOCK-BASED COMPENSATION (Narra

STOCK-BASED COMPENSATION (Narrative) (Details) - USD ($)	Jun. 18, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense (less than for stock options in 2014 and 2013)		$ 5,824,000	$ 3,655,000	$ 5,429,000
Excess tax benefit recognized		$ 5,000,000	$ 0	$ 0
Granted (in shares)		0	0	0
Stock options exercised			$ 0	$ 224,000
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant date fair value (in dollars per share)		$ 21.47	$ 14.18	$ 5.51
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant date fair value (in dollars per share)		$ 24.94	$ 26.42	$ 16.32
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense (less than for stock options in 2014 and 2013)		$ 600,000	$ 600,000	$ 2,700,000
Unrecognized compensation cost		$ 5,000,000
Period over which unrecognized stock compensation expense will be realized		1 year
Weighted-average grant date fair value (in dollars per share)		$ 50.11	$ 25.57	$ 16.89
Fair value of restricted stock units vested		$ 600,000	$ 600,000	$ 1,400,000
Participants who receives restricted stock units receives an equal amount of incentive restricted stock units, right to receive shares of common stock shares of common stock		0.35020
Conversion of previously vested shares (in shares)	69,000
Performance Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense (less than for stock options in 2014 and 2013)			$ 1,200,000
Restricted Stock Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant date fair value (in dollars per share)		$ 30.50	$ 21.11	$ 11.55
Percentage of plan that vest in relation to time		60.00%
Percentage of plan that vests based on performance		40.00%
Restricted Stock Award [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		2 years
Restricted Stock Award [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		3 years
Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense (less than for stock options in 2014 and 2013)		$ 5,200,000	$ 3,100,000	$ 2,700,000
Fair value of restricted stock units vested		5,900,000	1,500,000	3,000,000
Accelerated share-based compensation expense		200,000
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense (less than for stock options in 2014 and 2013)		0	100,000	100,000
Stock options exercised		500,000	200,000	100,000
Options outstanding and exercisable, intrinsic value		$ 1,100,000	$ 500,000	$ 500,000
Management Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock remaining for future issuance		900,000

STOCK-BASED COMPENSATION (Sched

STOCK-BASED COMPENSATION (Schedule of Restricted Stock Unit and Stock Award Activity) (Details) - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Unvested restricted stock units outstanding at beginning of period (in shares)	22
Granted (in shares)	16
Vested (in shares)	(22)
Forfeited (in shares)	0
Unvested restricted stock awards outstanding at end of period (in shares)	16	22
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Unvested restricted stock units outstanding at beginning of period (in dollars per share)	$ 25.57
Granted (in dollars per share)	50.11	$ 25.57	$ 16.89
Vested (in dollars per share)	25.57
Forfeited (in dollars per share)	0
Unvested restricted stock awards outstanding at end of period (in dollars per share)	$ 50.11	$ 25.57
Restricted Stock Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Unvested restricted stock units outstanding at beginning of period (in shares)	434
Granted (in shares)	219
Vested (in shares)	(418)
Forfeited (in shares)	(19)
Unvested restricted stock awards outstanding at end of period (in shares)	216	434
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Unvested restricted stock units outstanding at beginning of period (in dollars per share)	$ 13.30
Granted (in dollars per share)	30.50	$ 21.11	$ 11.55
Vested (in dollars per share)	14.06
Forfeited (in dollars per share)	27.64
Unvested restricted stock awards outstanding at end of period (in dollars per share)	$ 28.75	$ 13.30

STOCK-BASED COMPENSATION (Sch89

STOCK-BASED COMPENSATION (Schedule of Range of Assumptions Used to Estimate the Fair Value Of Performance Based Restricted Stock) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	36.70%
Expected volatility, Minimum		38.60%	41.30%
Expected volatility, Maximum		42.60%	43.30%
Risk-free interest rate	0.93%
Risk-free interest rate, Minimum		0.87%	0.38%
Risk-free interest rate, Maximum		1.17%	0.68%
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (years)	8 months 12 days	1 month	2 months 1 day
Weighted-average grant date fair value (in dollars per share)	$ 21.47	$ 14.18	$ 5.51
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (years)	1 year	1 year 1 month	1 year 2 months 1 day
Weighted-average grant date fair value (in dollars per share)	$ 24.94	$ 26.42	$ 16.32

STOCK-BASED COMPENSATION (Sch90

STOCK-BASED COMPENSATION (Schedule of Stock Option Activity) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Options outstanding at beginning of year (in shares)	46,000
Granted (in shares)	0	0	0
Exercised (in shares)	(15,000)
Forfeited and expired (in shares)	0
Options outstanding at end of year (in shares)	31,000	46,000
Options exercisable at end of year (in shares)	31,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Options outstanding at beginning of year (in dollars per share)	$ 18.46
Granted (in dollars per share)	0
Exercised (in dollars per share)	20.84
Forfeited and expired (in dollars per share)	0
Options outstanding at end of year (in dollars per share)	17.32	$ 18.46
Options exercisable at end of year (in dollars per share)	$ 17.32

STOCK-BASED COMPENSATION (Sch91

STOCK-BASED COMPENSATION (Schedule of Information about Stock Options Outstanding) (Details) - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Options Outstanding
Number of Shares Outstanding (in shares)	31	46
Weighted Average Exercise Price (in dollars per share)	$ 17.32	$ 18.46
Options Exercisable
Number of Shares Outstanding (in shares)	31
Weighted Average Exercise Price (in dollars per share)	$ 17.32
$12.00 - $12.00
Options Outstanding
Number of Shares Outstanding (in shares)	10
Weighted Average Remaining Contractual Life	4 years 6 months 2 days
Weighted Average Exercise Price (in dollars per share)	$ 12
Options Exercisable
Number of Shares Outstanding (in shares)	10
Weighted Average Exercise Price (in dollars per share)	$ 12
Range of exercise prices, Lower Range (in dollars per share)	12
Range of exercise prices, Upper Range (in dollars per share)	$ 12
$15.00 - $15.00
Options Outstanding
Number of Shares Outstanding (in shares)	11
Weighted Average Remaining Contractual Life	4 years 6 months 8 days
Weighted Average Exercise Price (in dollars per share)	$ 15
Options Exercisable
Number of Shares Outstanding (in shares)	11
Weighted Average Exercise Price (in dollars per share)	$ 15
Range of exercise prices, Lower Range (in dollars per share)	15
Range of exercise prices, Upper Range (in dollars per share)	$ 15
$22.69 - $22.69
Options Outstanding
Number of Shares Outstanding (in shares)	5
Weighted Average Remaining Contractual Life	4 years 6 months 8 days
Weighted Average Exercise Price (in dollars per share)	$ 22.69
Options Exercisable
Number of Shares Outstanding (in shares)	5
Weighted Average Exercise Price (in dollars per share)	$ 22.69
Range of exercise prices, Lower Range (in dollars per share)	22.69
Range of exercise prices, Upper Range (in dollars per share)	$ 22.69
$26.68 - $26.68
Options Outstanding
Number of Shares Outstanding (in shares)	5
Weighted Average Remaining Contractual Life	4 years 6 months 8 days
Weighted Average Exercise Price (in dollars per share)	$ 26.68
Options Exercisable
Number of Shares Outstanding (in shares)	5
Weighted Average Exercise Price (in dollars per share)	$ 26.68
Range of exercise prices, Lower Range (in dollars per share)	26.68
Range of exercise prices, Upper Range (in dollars per share)	$ 26.68
$12.00 - $26.68
Options Outstanding
Number of Shares Outstanding (in shares)	31
Weighted Average Remaining Contractual Life	4 years 6 months 8 days
Weighted Average Exercise Price (in dollars per share)	$ 17.32
Options Exercisable
Number of Shares Outstanding (in shares)	31
Weighted Average Exercise Price (in dollars per share)	$ 17.32
Range of exercise prices, Lower Range (in dollars per share)	12
Range of exercise prices, Upper Range (in dollars per share)	$ 26.68

NET EARNINGS (LOSS) PER SHARE92

NET EARNINGS (LOSS) PER SHARE (Schedule of the Components of the Basic and Diluted Earnings Per Share) (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Net Income (Loss) Available to Common Stockholders, Diluted [Abstract]
Income from continuing operations									$ 25,820	$ 21,575	$ (18,273)
Loss from discontinued operations, net of taxes									(320)	(993)	(1,856)
Net income (loss)	$ 24,662	$ 1,619	$ 9,703	$ (10,484)	$ 867	$ 13,007	$ 7,861	$ (1,153)	$ 25,500	$ 20,582	$ (20,129)
Denominator:
Basic weighted average common shares outstanding (in shares)									14,080	13,541	12,917
Restricted stock and restricted stock units (in shares)									170	210
Warrants (in shares)									1,295	136
Stock options (in shares)									15	11
Denominator for diluted earnings per share (in shares)									15,560	13,898	12,917

NET EARNINGS (LOSS) PER SHARE93

NET EARNINGS (LOSS) PER SHARE (Schedule of Potentially Dilutive Shares Excluded from the Diluted Earnings (Loss) Per Share Calculations) (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive shares (in shares)	1,598	3,945
Convertible Debt Securities [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive shares (in shares)	0	349
Restricted Stock Units, Restricted Stock and Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive shares (in shares)	84	516
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive shares (in shares)	14	80
Warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive shares (in shares)	1,500	3,000

BUSINESS SEGMENTS (Details)

BUSINESS SEGMENTS (Details) $ in Thousands	Jun. 02, 2015Business	Dec. 31, 2015USD ($)	Sep. 30, 2015USD ($)	Jun. 30, 2015USD ($)	Mar. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Sep. 30, 2014USD ($)	Jun. 30, 2014USD ($)	Mar. 31, 2014USD ($)	Dec. 31, 2015USD ($)Reporting_Segment	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | Reporting_Segment										2
Revenue		$ 263,573	$ 295,111	$ 244,695	$ 171,338	$ 179,510	$ 197,589	$ 180,358	$ 146,257	$ 974,717	$ 703,714	$ 598,155
Other products and eliminations income from operations										73,866	45,322	21,435
Depreciation, depletion and amortization for reportable segments										(43,570)	(23,849)	(18,868)
Interest expense, net										(21,734)	(20,431)	(11,332)
Corporate gain on early extinguishment of debt										0	11	985
Corporate derivative loss										(60,016)	(3,556)	(29,964)
Loss on revaluation of contingent consideration										(932)	0	0
Corporate, other products and eliminations other income, net										3,569	2,385	1,771
(Loss) income from continuing operations before income taxes										(4,315)	23,731	(17,105)
Total capital expenditures										24,977	32,584	19,988
Property, plant and equipment, net		248,123				176,524				248,123	176,524	138,560
Aggregate products segment [Member]
Segment Reporting Information [Line Items]
Revenue										34,191	31,662	21,715
Property, plant and equipment, net		65,937				40,878				65,937	40,878	36,819
Ready-mixed concrete [Member]
Segment Reporting Information [Line Items]
Revenue										876,633	632,787	545,302
Property, plant and equipment, net		166,837				126,141				166,837	126,141	91,776
Aggregate distribution [Member]
Segment Reporting Information [Line Items]
Revenue										28,393	4,892	0
Building materials [Member]
Segment Reporting Information [Line Items]
Revenue										17,533	15,410	14,656
Lime [Member]
Segment Reporting Information [Line Items]
Revenue										9,250	10,459	7,356
Hauling [Member]
Segment Reporting Information [Line Items]
Revenue										5,425	4,221	4,533
Other [Member]
Segment Reporting Information [Line Items]
Revenue										3,292	4,283	4,593
Ready-mixed concrete [Member]
Segment Reporting Information [Line Items]
Total reportable segment Adjusted EBITDA										131,940	84,706	58,583
Total capital expenditures										12,321	21,754	12,236
Aggregate products segment [Member]
Segment Reporting Information [Line Items]
Revenue										34,191	31,662	21,715
Total reportable segment Adjusted EBITDA										14,996	10,549	7,192
Total capital expenditures										7,859	9,128	5,773
Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue										937,072	685,405	583,515
Total reportable segment Adjusted EBITDA										146,936	95,255	65,775
Depreciation, depletion and amortization for reportable segments										(38,767)	(20,362)	(15,777)
Operating Segments [Member] | Ready-mixed concrete [Member]
Segment Reporting Information [Line Items]
Revenue										876,633	632,787	545,302
Operating Segments [Member] | Aggregate products segment [Member]
Segment Reporting Information [Line Items]
Revenue										60,439	52,618	38,213
Intersegment Eliminations [Member] | Aggregate products segment [Member]
Segment Reporting Information [Line Items]
Revenue										26,248	20,956	16,498
Intersegment Eliminations and Other Products [Member]
Segment Reporting Information [Line Items]
Revenue										37,645	18,309	14,640
Other products and eliminations income from operations										8,704	3,082	2,615
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Corporate overhead, net of insurance allocations										(39,012)	(30,870)	(29,957)
Intersegment Eliminations, Other Products and Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Corporate, other products and eliminations other income, net										506	602	550
Other Products and Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Total capital expenditures										4,797	1,685	1,979
Property, plant and equipment, net		$ 15,349				$ 9,505				15,349	9,505	9,965
Precast Concrete Operations in Pennsylvania [Member]
Segment Reporting Information [Line Items]
Remaining precast concrete operation held for sale | Business	1
Continuing Operations [Member]
Segment Reporting Information [Line Items]
Total capital expenditures										$ 24,977	$ 32,567	$ 19,988

RISK CONCENTRATION (Narrative)

RISK CONCENTRATION (Narrative) (Details) - Unionized Employees Concentration Risk [Member] - employee	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Concentration Risk [Line Items]
Concentration Risk, Percentage	36.10%	28.80%
Entity Number of Employees	976	617

COMMITMENTS AND CONTINGENCIES96

COMMITMENTS AND CONTINGENCIES (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Loss Contingencies [Line Items]
Operating Leases, Rent Expense	$ 17.4	$ 11.9	$ 11.2
Insurance programs [Member]
Loss Contingencies [Line Items]
Loss contingency deductible retentions per occurrence	1
Accrual of estimated losses	12	$ 9.5
Performance Bonds [Member]
Loss Contingencies [Line Items]
Estimate of possible loss	$ 16.4

COMMITMENTS AND CONTINGENCIES97

COMMITMENTS AND CONTINGENCIES (Schedule of Future Minimum Rental Payments) (Details) $ in Thousands	Dec. 31, 2015USD ($)
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2,016	$ 13,529
2,017	12,575
2,018	10,575
2,019	7,446
2,020	3,288
Thereafter	18,157
Total	$ 65,570

EMPLOYEE BENEFIT PLANS AND MU98

EMPLOYEE BENEFIT PLANS AND MULTI-EMPLOYER PENSION PLANS (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Potential maximum contribution stated as a percentage of employee compensation	60.00%
Percent matched	100.00%		50.00%
Maximum matching as stated as a percentage of employee compensation	4.00%		6.00%
Contributions by employer	$ 2.9	$ 1.5	$ 1
Contributions as a Percent of Total Contributions (not more than)	5.00%
Contribution Tier 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Percent matched		100.00%
Percent of employee gross pay		1.00%
Contribution Tier 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Percent matched		50.00%
Percent of employee gross pay		5.00%

EMPLOYEE BENEFIT PLANS AND MU99

EMPLOYEE BENEFIT PLANS AND MULTI-EMPLOYER PENSION PLANS (Schedule of Multiemployer Plans) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Multiemployer Plans [Line Items]
Contributions	$ 8,058	$ 6,943	$ 6,223
Western Conference of Teamsters Pension Plan [Member]
Multiemployer Plans [Line Items]
Contributions	4,357	3,568	3,204
Operating Engineers Pension Trust Fund [Member]
Multiemployer Plans [Line Items]
Contributions	1,173	933	837
Local 282 Pension Trust Fund [Member]
Multiemployer Plans [Line Items]
Contributions	829	819	650
Trucking Employees of North Jersey Pension Fund [Member]
Multiemployer Plans [Line Items]
Contributions	615	559	513
Pension Fund Local 445 [Member]
Multiemployer Plans [Line Items]
Contributions	200	184	193
Operating Engineers 825 Pension Fund [Member]
Multiemployer Plans [Line Items]
Contributions	178	161	151
Automotive Industries Pension Plan [Member]
Multiemployer Plans [Line Items]
Contributions	102	179	180
Other [Member]
Multiemployer Plans [Line Items]
Contributions	$ 604	$ 540	$ 495

SUBSEQUENT EVENT (Details)

SUBSEQUENT EVENT (Details) $ in Millions	Feb. 29, 2016USD ($)Mixer_TruckProcessing_Facility	Dec. 31, 2015Processing_Facility	Dec. 31, 2014Processing_Facility
Subsequent Event [Line Items]
Number of plants acquired | Processing_Facility		22	7
Greco Brothers Concrete of L.I., Inc. [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Cash paid on acquisition | $	$ 15.8
Plus (less) post-closing adjustments | $	$ 0.9
Number of plants acquired | Processing_Facility	2
Number of mixer trucks acquired | Mixer_Truck	37

QUARTERLY SUMMARY (unaudited101

QUARTERLY SUMMARY (unaudited) (Schedule of Quarterly Financial Information) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]
Revenue - continuing operations	$ 263,573	$ 295,111	$ 244,695	$ 171,338	$ 179,510	$ 197,589	$ 180,358	$ 146,257	$ 974,717	$ 703,714	$ 598,155
Net (loss) income	$ 24,662	$ 1,619	$ 9,703	$ (10,484)	$ 867	$ 13,007	$ 7,861	$ (1,153)	$ 25,500	$ 20,582	$ (20,129)
Net (loss) income per share-basic (in dollars per share)	$ 1.53	$ 0.11	$ 0.69	$ (0.77)	$ 0.06	$ 0.96	$ 0.58	$ (0.09)	$ 1.81	$ 1.52	$ (1.56)
Net (loss) income per share-diluted (in dollars per share)	$ 1.70	$ 0.10	$ 0.64	$ (0.77)	$ 0.06	$ 0.94	$ 0.57	$ (0.09)	$ 1.64	$ 1.48	$ (1.56)