3.8.0.1 html 120 230 1 false 45 0 false 5 false false R1.htm 000 - Document - Document And Entity Information Sheet http://www.ultralifecorporation.com/20171001/role/statement-document-and-entity-information Document And Entity Information Cover 1 false false R2.htm 001 - Statement - Consolidated Balance Sheets (Current Period Unaudited) Sheet http://www.ultralifecorporation.com/20171001/role/statement-consolidated-balance-sheets-current-period-unaudited Consolidated Balance Sheets (Current Period Unaudited) Statements 2 false false R3.htm 002 - Statement - Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) Sheet http://www.ultralifecorporation.com/20171001/role/statement-consolidated-balance-sheets-current-period-unaudited-parentheticals Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) Statements 3 false false R4.htm 003 - Statement - Consolidated Statements of Income and Comprehensive Income (Unaudited) Sheet http://www.ultralifecorporation.com/20171001/role/statement-consolidated-statements-of-income-and-comprehensive-income-unaudited Consolidated Statements of Income and Comprehensive Income (Unaudited) Statements 4 false false R5.htm 004 - Statement - Consolidated Statements of Cash Flows (Unaudited) Sheet http://www.ultralifecorporation.com/20171001/role/statement-consolidated-statements-of-cash-flows-unaudited Consolidated Statements of Cash Flows (Unaudited) Statements 5 false false R6.htm 005 - Disclosure - Note 1 - Basis of Presentation Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-1-basis-of-presentation Note 1 - Basis of Presentation Notes 6 false false R7.htm 006 - Disclosure - Note 2 - Acquisition Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-2-acquisition Note 2 - Acquisition Notes 7 false false R8.htm 007 - Disclosure - Note 3 - Share Repurchase Program Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-3-share-repurchase-program Note 3 - Share Repurchase Program Notes 8 false false R9.htm 008 - Disclosure - Note 4 - Inventories Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-4-inventories Note 4 - Inventories Notes 9 false false R10.htm 009 - Disclosure - Note 5 - Property, Equipment and Improvements Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-5-property-equipment-and-improvements Note 5 - Property, Equipment and Improvements Notes 10 false false R11.htm 010 - Document - Note 6 - Goodwill, Intangible Assets and Long Term Assets Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-6-goodwill-intangible-assets-and-long-term-assets Note 6 - Goodwill, Intangible Assets and Long Term Assets Uncategorized 11 false false R12.htm 011 - Disclosure - Note 7 - Revolving Credit Agreement Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-7-revolving-credit-agreement Note 7 - Revolving Credit Agreement Uncategorized 12 false false R13.htm 012 - Disclosure - Note 8 - Shareholders' Equity Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-8-shareholders-equity Note 8 - Shareholders' Equity Uncategorized 13 false false R14.htm 013 - Disclosure - Note 9 - Income Taxes Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-9-income-taxes Note 9 - Income Taxes Uncategorized 14 false false R15.htm 014 - Disclosure - Note 10 - Earnings Per Share Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-10-earnings-per-share Note 10 - Earnings Per Share Uncategorized 15 false false R16.htm 015 - Disclosure - Note 11 - Commitments and Contingencies Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-11-commitments-and-contingencies Note 11 - Commitments and Contingencies Uncategorized 16 false false R17.htm 016 - Disclosure - Note 12 - Business Segment Information Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-12-business-segment-information Note 12 - Business Segment Information Uncategorized 17 false false R18.htm 017 - Disclosure - Note 13 - Recent Accounting Pronouncements and Developments Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-13-recent-accounting-pronouncements-and-developments Note 13 - Recent Accounting Pronouncements and Developments Uncategorized 18 false false R19.htm 018 - Disclosure - Note 2 - Acquisition (Tables) Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-2-acquisition-tables Note 2 - Acquisition (Tables) Uncategorized 19 false false R20.htm 019 - Disclosure - Note 4 - Inventories (Tables) Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-4-inventories-tables Note 4 - Inventories (Tables) Uncategorized 20 false false R21.htm 020 - Disclosure - Note 5 - Property, Equipment and Improvements (Tables) Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-5-property-equipment-and-improvements-tables Note 5 - Property, Equipment and Improvements (Tables) Uncategorized 21 false false R22.htm 021 - Disclosure - Note 6 - Goodwill, Intangible Assets and Long Term Assets (Tables) Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-6-goodwill-intangible-assets-and-long-term-assets-tables Note 6 - Goodwill, Intangible Assets and Long Term Assets (Tables) Uncategorized 22 false false R23.htm 022 - Disclosure - Note 7 - Revolving Credit Agreement (Tables) Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-7-revolving-credit-agreement-tables Note 7 - Revolving Credit Agreement (Tables) Uncategorized 23 false false R24.htm 023 - Disclosure - Note 8 - Shareholders' Equity (Tables) Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-8-shareholders-equity-tables Note 8 - Shareholders' Equity (Tables) Uncategorized 24 false false R25.htm 024 - Disclosure - Note 9 - Income Taxes (Tables) Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-9-income-taxes-tables Note 9 - Income Taxes (Tables) Uncategorized 25 false false R26.htm 025 - Disclosure - Note 11 - Commitments and Contingencies (Tables) Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-11-commitments-and-contingencies-tables Note 11 - Commitments and Contingencies (Tables) Uncategorized 26 false false R27.htm 026 - Disclosure - Note 12 - Business Segment Information (Tables) Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-12-business-segment-information-tables Note 12 - Business Segment Information (Tables) Uncategorized 27 false false R28.htm 027 - Disclosure - Note 2 - Acquisition (Details Textual) Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-2-acquisition-details-textual Note 2 - Acquisition (Details Textual) Uncategorized 28 false false R29.htm 028 - Disclosure - Note 2 - Acquisition - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed (Details) Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-2-acquisition-schedule-of-recognized-identified-assets-acquired-and-liabilities-assumed-details Note 2 - Acquisition - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed (Details) Uncategorized 29 false false R30.htm 029 - Disclosure - Note 2 - Acquisition - Unaudited Pro Forma Information (Details) Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-2-acquisition-unaudited-pro-forma-information-details Note 2 - Acquisition - Unaudited Pro Forma Information (Details) Uncategorized 30 false false R31.htm 030 - Disclosure - Note 3 - Share Repurchase Program (Details Textual) Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-3-share-repurchase-program-details-textual Note 3 - Share Repurchase Program (Details Textual) Uncategorized 31 false false R32.htm 031 - Disclosure - Note 4 - Inventories - Composition of Inventories (Details) Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-4-inventories-composition-of-inventories-details Note 4 - Inventories - Composition of Inventories (Details) Uncategorized 32 false false R33.htm 032 - Disclosure - Note 5 - Property, Equipment and Improvements - Major Classes of Property, Equipment and Improvements (Details) Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-5-property-equipment-and-improvements-major-classes-of-property-equipment-and-improvements-details Note 5 - Property, Equipment and Improvements - Major Classes of Property, Equipment and Improvements (Details) Uncategorized 33 false false R34.htm 033 - Disclosure - Note 6 - Goodwill, Intangible Assets and Long Term Assets - Goodwill Activity by Segment (Details) Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-6-goodwill-intangible-assets-and-long-term-assets-goodwill-activity-by-segment-details Note 6 - Goodwill, Intangible Assets and Long Term Assets - Goodwill Activity by Segment (Details) Uncategorized 34 false false R35.htm 034 - Disclosure - Note 6 - Goodwill, Intangible Assets and Long Term Assets - Composition of Intangible Assets (Details) Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-6-goodwill-intangible-assets-and-long-term-assets-composition-of-intangible-assets-details Note 6 - Goodwill, Intangible Assets and Long Term Assets - Composition of Intangible Assets (Details) Uncategorized 35 false false R36.htm 035 - Disclosure - Note 6 - Goodwill, Intangible Assets and Long Term Assets - Amortization Expense for Intangible Assets (Details) Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-6-goodwill-intangible-assets-and-long-term-assets-amortization-expense-for-intangible-assets-details Note 6 - Goodwill, Intangible Assets and Long Term Assets - Amortization Expense for Intangible Assets (Details) Uncategorized 36 false false R37.htm 036 - Disclosure - Note 7 - Revolving Credit Agreement (Details Textual) Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-7-revolving-credit-agreement-details-textual Note 7 - Revolving Credit Agreement (Details Textual) Uncategorized 37 false false R38.htm 037 - Disclosure - Note 7 - Revolving Credit Agreement - Interest Rate Margins (Details) Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-7-revolving-credit-agreement-interest-rate-margins-details Note 7 - Revolving Credit Agreement - Interest Rate Margins (Details) Uncategorized 38 false false R39.htm 038 - Disclosure - Note 8 - Shareholders' Equity (Details Textual) Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-8-shareholders-equity-details-textual Note 8 - Shareholders' Equity (Details Textual) Uncategorized 39 false false R40.htm 039 - Disclosure - Note 8 - Shareholders' Equity - Non-cash Stock Compensation Expense (Details) Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-8-shareholders-equity-noncash-stock-compensation-expense-details Note 8 - Shareholders' Equity - Non-cash Stock Compensation Expense (Details) Uncategorized 40 false false R41.htm 040 - Disclosure - Note 8 - Shareholders' Equity - Stock Option Activity (Details) Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-8-shareholders-equity-stock-option-activity-details Note 8 - Shareholders' Equity - Stock Option Activity (Details) Uncategorized 41 false false R42.htm 041 - Disclosure - Note 8 - Shareholders' Equity - Stock Option Assumptions (Details) Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-8-shareholders-equity-stock-option-assumptions-details Note 8 - Shareholders' Equity - Stock Option Assumptions (Details) Uncategorized 42 false false R43.htm 042 - Disclosure - Note 9 - Income Taxes (Details Textual) Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-9-income-taxes-details-textual Note 9 - Income Taxes (Details Textual) Uncategorized 43 false false R44.htm 043 - Disclosure - Note 9 - Income Taxes - Income Tax Expense (Details) Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-9-income-taxes-income-tax-expense-details Note 9 - Income Taxes - Income Tax Expense (Details) Uncategorized 44 false false R45.htm 044 - Disclosure - Note 9 - Income Taxes - Effective Consolidated Tax Rate (Details) Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-9-income-taxes-effective-consolidated-tax-rate-details Note 9 - Income Taxes - Effective Consolidated Tax Rate (Details) Uncategorized 45 false false R46.htm 045 - Disclosure - Note 10 - Earnings Per Share (Details Textual) Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-10-earnings-per-share-details-textual Note 10 - Earnings Per Share (Details Textual) Uncategorized 46 false false R47.htm 046 - Disclosure - Note 11 - Commitments and Contingencies (Details Textual) Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-11-commitments-and-contingencies-details-textual Note 11 - Commitments and Contingencies (Details Textual) Uncategorized 47 false false R48.htm 047 - Disclosure - Note 11 - Commitments and Contingencies - Changes in Produce Warranty Liability (Details) Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-11-commitments-and-contingencies-changes-in-produce-warranty-liability-details Note 11 - Commitments and Contingencies - Changes in Produce Warranty Liability (Details) Uncategorized 48 false false R49.htm 048 - Disclosure - Note 12 - Business Segment Information (Details Textual) Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-12-business-segment-information-details-textual Note 12 - Business Segment Information (Details Textual) Uncategorized 49 false false R50.htm 049 - Disclosure - Note 12 - Business Segment Information - Segment Activity (Details) Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-12-business-segment-information-segment-activity-details Note 12 - Business Segment Information - Segment Activity (Details) Uncategorized 50 false false R51.htm 050 - Disclosure - Note 13 - Recent Accounting Pronouncements and Developments (Details Textual) Sheet http://www.ultralifecorporation.com/20171001/role/statement-note-13-recent-accounting-pronouncements-and-developments-details-textual Note 13 - Recent Accounting Pronouncements and Developments (Details Textual) Uncategorized 51 false false All Reports Book All Reports ulbi-20171001.xml ulbi-20171001.xsd ulbi-20171001_cal.xml ulbi-20171001_def.xml ulbi-20171001_lab.xml ulbi-20171001_pre.xml http://fasb.org/us-gaap/2017-01-31 http://xbrl.sec.gov/dei/2014-01-31 true true