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Subsidiary Guarantors - Schedule of Condensed Consolidating Balance Sheet (Detail) (USD $) In Thousands, unless otherwise specified | Jul. 31, 2013 | Apr. 30, 2013 | Jul. 31, 2012 | Apr. 30, 2012
--- | --- | --- | --- | ---
CURRENT ASSETS: |  |  |  |
Cash and cash equivalents | $ 2,919 | $ 1,755 | $ 3,505 | $ 4,534
Restricted cash | 76 | 76 |  |
Accounts receivable - trade, net | 54,277 | 48,689 |  |
Refundable income taxes | 791 | 128 |  |
Prepaid expenses | 7,367 | 5,711 |  |
Inventory | 3,665 | 3,494 |  |
Deferred income taxes | 3,461 | 3,730 |  |
Other current assets | 1,018 | 901 |  |
Current assets of discontinued operations | 257 | 61 |  |
Current assets of discontinued operations |  | 61 |  |
Total current assets | 73,831 | 64,545 |  |
Property, plant and equipment, net | 424,772 | 422,502 |  |
Goodwill | 115,928 | 115,928 |  |
Intangible assets, net | 11,152 | 11,674 |  |
Restricted assets | 538 | 545 |  |
Notes receivable - related party | 148 | 147 |  |
Investments in unconsolidated entities | 19,225 | 20,252 |  |
Other non-current assets | 27,407 | 27,526 |  |
Non-current assets of discontinued operations | 1,743 |  |  |
Total non-current assets | 600,913 | 598,574 |  |
Total assets | 674,744 | 663,119 |  |
CURRENT LIABILITIES: |  |  |  |
Current maturities of long-term debt and capital leases | 427 | 857 |  |
Current maturities of financing lease obligations | 367 | 361 |  |
Accounts payable | 52,252 | 51,974 |  |
Accrued payroll and related expenses | 3,844 | 3,983 |  |
Accrued interest | 12,953 | 6,074 |  |
Current accrued capping, closure and post-closure costs | 5,939 | 3,835 |  |
Other accrued liabilities | 21,991 | 21,014 |  |
Total current liabilities | 97,773 | 88,098 |  |
Long-term debt and capital leases, less current maturities | 496,988 | 493,531 |  |
Financing lease obligations, less current maturities | 1,363 | 1,456 |  |
Accrued capping, closure and post-closure costs, less current portion | 38,810 | 39,335 |  |
Deferred income taxes | 6,852 | 6,798 |  |
Other long-term liabilities | 17,101 | 18,450 |  |
Casella Waste Systems, Inc. stockholders' equity: |  |  |  |
Casella Waste Systems, Inc. stockholders' equity | 11,657 | 11,285 |  |
Noncontrolling interests | 4,200 | 4,166 |  |
Total stockholders' equity | 15,857 | 15,451 |  |
Total liabilities and stockholders' equity | 674,744 | 663,119 |  |
Noncontrolling interests | 4,200 | 4,166 |  |
Total stockholders' equity | 15,857 | 15,451 |  |
Total liabilities and stockholders' equity | 674,744 | 663,119 |  |
Parent [Member] |  |  |  |
CURRENT ASSETS: |  |  |  |
Cash and cash equivalents | 2,320 | 1,260 | 2,423 | 3,799
Accounts receivable - trade, net | 253 | 571 |  |
Refundable income taxes | 791 | 128 |  |
Prepaid expenses | 3,005 | 1,471 |  |
Deferred income taxes | 3,461 | 3,730 |  |
Other current assets | 392 | 366 |  |
Total current assets | 10,222 | 7,526 |  |
Property, plant and equipment, net | 4,098 | 2,771 |  |
Intangible assets, net | 227 | 249 |  |
Notes receivable - related party | 148 | 147 |  |
Investments in unconsolidated entities | 16,486 | 16,486 |  |
Investments in subsidiaries | (50,741) | (59,759) |  |
Other non-current assets | 15,624 | 15,774 |  |
Total non-current assets | (14,158) | (24,332) |  |
Intercompany receivable | 574,105 | 580,328 |  |
Total assets | 570,169 | 563,522 |  |
CURRENT LIABILITIES: |  |  |  |
Current maturities of long-term debt and capital leases | 80 |  |  |
Accounts payable | 23,302 | 23,492 |  |
Accrued payroll and related expenses | 595 | 538 |  |
Accrued interest | 12,948 | 6,071 |  |
Other accrued liabilities | 7,882 | 10,001 |  |
Total current liabilities | 44,807 | 40,102 |  |
Long-term debt and capital leases, less current maturities | 495,386 | 492,965 |  |
Deferred income taxes | 6,852 | 6,798 |  |
Other long-term liabilities | 11,467 | 12,372 |  |
Casella Waste Systems, Inc. stockholders' equity: |  |  |  |
Casella Waste Systems, Inc. stockholders' equity | 11,657 | 11,285 |  |
Total stockholders' equity | 11,657 | 11,285 |  |
Total liabilities and stockholders' equity | 570,169 | 563,522 |  |
Total stockholders' equity | 11,657 | 11,285 |  |
Total liabilities and stockholders' equity | 570,169 | 563,522 |  |
Guarantors [Member] |  |  |  |
CURRENT ASSETS: |  |  |  |
Cash and cash equivalents | 299 | 253 | 331 | 368
Restricted cash | 76 | 76 |  |
Accounts receivable - trade, net | 53,639 | 47,644 |  |
Prepaid expenses | 4,333 | 4,240 |  |
Inventory | 3,609 | 3,440 |  |
Other current assets | 619 | 528 |  |
Current assets of discontinued operations | 257 |  |  |
Current assets of discontinued operations |  | 61 |  |
Total current assets | 62,832 | 56,242 |  |
Property, plant and equipment, net | 412,347 | 411,284 |  |
Goodwill | 115,928 | 115,928 |  |
Intangible assets, net | 10,925 | 11,425 |  |
Restricted assets | 538 | 545 |  |
Investments in unconsolidated entities | 2,209 | 2,189 |  |
Other non-current assets | 11,783 | 11,752 |  |
Non-current assets of discontinued operations | 1,743 |  |  |
Total non-current assets | 555,473 | 553,123 |  |
Intercompany receivable | (533,452) | (539,752) |  |
Total assets | 84,853 | 69,613 |  |
CURRENT LIABILITIES: |  |  |  |
Current maturities of long-term debt and capital leases | 347 | 857 |  |
Current maturities of financing lease obligations | 367 | 361 |  |
Accounts payable | 28,518 | 27,847 |  |
Accrued payroll and related expenses | 3,249 | 3,445 |  |
Accrued interest | 5 | 3 |  |
Current accrued capping, closure and post-closure costs | 5,936 | 3,832 |  |
Other accrued liabilities | 13,978 | 10,896 |  |
Total current liabilities | 52,400 | 47,241 |  |
Long-term debt and capital leases, less current maturities | 1,602 | 566 |  |
Financing lease obligations, less current maturities | 1,363 | 1,456 |  |
Accrued capping, closure and post-closure costs, less current portion | 38,772 | 39,298 |  |
Other long-term liabilities | 5,634 | 6,078 |  |
Casella Waste Systems, Inc. stockholders' equity: |  |  |  |
Casella Waste Systems, Inc. stockholders' equity | (14,918) | (25,026) |  |
Total stockholders' equity | (14,918) | (25,026) |  |
Total liabilities and stockholders' equity | 84,853 | 69,613 |  |
Total stockholders' equity | (14,918) | (25,026) |  |
Total liabilities and stockholders' equity | 84,853 | 69,613 |  |
Non-Guarantors [Member] |  |  |  |
CURRENT ASSETS: |  |  |  |
Cash and cash equivalents | 300 | 242 | 751 | 367
Accounts receivable - trade, net | 385 | 474 |  |
Prepaid expenses | 29 |  |  |
Inventory | 56 | 54 |  |
Other current assets | 7 | 7 |  |
Total current assets | 777 | 777 |  |
Property, plant and equipment, net | 8,327 | 8,447 |  |
Investments in unconsolidated entities | 2,462 | 3,509 |  |
Total non-current assets | 10,789 | 11,956 |  |
Intercompany receivable | (42,585) | (42,508) |  |
Total assets | (31,019) | (29,775) |  |
CURRENT LIABILITIES: |  |  |  |
Accounts payable | 432 | 635 |  |
Current accrued capping, closure and post-closure costs | 3 | 3 |  |
Other accrued liabilities | 131 | 117 |  |
Total current liabilities | 566 | 755 |  |
Accrued capping, closure and post-closure costs, less current portion | 38 | 37 |  |
Casella Waste Systems, Inc. stockholders' equity: |  |  |  |
Casella Waste Systems, Inc. stockholders' equity | (35,823) | (34,733) |  |
Noncontrolling interests | 4,200 | 4,166 |  |
Total stockholders' equity | (31,623) | (30,567) |  |
Total liabilities and stockholders' equity | (31,019) | (29,775) |  |
Noncontrolling interests | 4,200 | 4,166 |  |
Total stockholders' equity | (31,623) | (30,567) |  |
Total liabilities and stockholders' equity | (31,019) | (29,775) |  |
Elimination [Member] |  |  |  |
CURRENT ASSETS: |  |  |  |
Cash and cash equivalents |  |  |  |
Investments in unconsolidated entities | (1,932) | (1,932) |  |
Investments in subsidiaries | 50,741 | 59,759 |  |
Total non-current assets | 48,809 | 57,827 |  |
Intercompany receivable | 1,932 | 1,932 |  |
Total assets | 50,741 | 59,759 |  |
Casella Waste Systems, Inc. stockholders' equity: |  |  |  |
Casella Waste Systems, Inc. stockholders' equity | 50,741 | 59,759 |  |
Total stockholders' equity | 50,741 | 59,759 |  |
Total liabilities and stockholders' equity | 50,741 | 59,759 |  |
Total stockholders' equity | 50,741 | 59,759 |  |
Total liabilities and stockholders' equity | $ 50,741 | $ 59,759 |  |

X
- Definition Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executing costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid within one year (or one operating cycle, if longer) of the balance sheet date that relates for our financing lease obligations, which qualify for treatment as capital leases, but are presented separately from LTD and capital leases. + References No definition available. + Details
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